Romans 11:18

THE MESSAGE

Parallel Translations

Christian Standard Bible®
do not boast that you are better than those branches. But if you do boast—you do not sustain the root, but the root sustains you.

King James Version (1611)
Boast not against the branches: but if thou boast, thou bearest not the root, but the root thee.

King James Version
Boast not against the branches. But if thou boast, thou bearest not the root, but the root thee.

English Standard Version
do not be arrogant toward the branches. If you are, remember it is not you who support the root, but the root that supports you.

New American Standard Bible
do not be arrogant toward the branches; but if you are arrogant, remember that it is not you who supports the root, but the root supports you.

New Century Version
So do not brag about those branches that were broken off. If you brag, remember that you do not support the root, but the root supports you.

Amplified Bible
do not boast over the [broken] branches and exalt yourself at their expense. If you do boast and feel superior, remember that it is not you who supports the root, but the root that supports you.

New American Standard Bible (1995)
do not be arrogant toward the branches; but if you are arrogant, remember that it is not you who supports the root, but the root supports you.

Legacy Standard Bible
do not boast against the branches. But if you do boast against them, remember that it is not you who supports the root, but the root supports you.

Berean Standard Bible
do not boast over those branches. If you do, remember this: You do not support the root, but the root supports you.

Contemporary English Version
But don't think you are better than the branches that were cut away. Just remember that you are not supporting the roots of that tree. Its roots are supporting you.

Complete Jewish Bible
then don't boast as if you were better than the branches! However, if you do boast, remember that you are not supporting the root, the root is supporting you.

Darby Translation
boast not against the branches; but if thou boast, [it is] not *thou* bearest the root, but the root thee.

Easy-to-Read Version
But don't act as if you are better than those branches that were broken off. You have no reason to be proud of yourself, because you don't give life to the root. The root gives life to you.

Geneva Bible (1587)
Boast not thy selfe against the branches: and if thou boast thy selfe, thou bearest not the roote, but the roote thee.

George Lamsa Translation
Do not boast over the branches. For if you boast, it is not you who sustains the root, but the root sustains you.

Good News Translation
So then, you must not despise those who were broken off like branches. How can you be proud? You are just a branch; you don't support the roots—the roots support you.

Lexham English Bible
do not boast against the branches. But if you boast against them, you do not support the root, but the root supports you.

Literal Translation
do not boast against the branches. But if you do boast, it is not you that bears the root, but the root bears you.

American Standard Version
glory not over the branches: but if thou gloriest, it is not thou that bearest the root, but the root thee.

Bible in Basic English
Do not be uplifted in pride over the branches: because it is not you who are the support of the root, but it is by the root that you are supported.

Hebrew Names Version
don't boast over the branches. But if you boast, it is not you who bear the root, but the root you.

International Standard Version
do not boast about being better thanbeing better than">[fn] the otherother">[fn] branches. If you boast, remember that you do not support the root, but the root supports you.1 Corinthians 10:12;">[xr]

Etheridge Translation
boast not against the branches: but if thou boast, thou bearest not the root, but the root beareth thee.

Murdock Translation
do not glory over the branches. For if thou gloriest, thou sustainest not the root, but the root sustaineth thee.

Bishop's Bible (1568)
Boast not thy selfe agaynst the braunches. For yf thou boast thy selfe, thou bearest not the roote, but the roote thee.

English Revised Version
glory not over the branches: but if thou gloriest, it is not thou that bearest the root, but the root thee.

World English Bible
don't boast over the branches. But if you boast, it is not you who bear the root, but the root you.

Wesley's New Testament (1755)
Boast not against the branches, but if thou boast, thou bearest not the root, but the root thee.

Weymouth's New Testament
beware of glorying over the natural branches. Or if you are so glorying, do not forget that it is not you who uphold the root: the root upholds you.

Wycliffe Bible (1395)
nyle thou haue glorie ayens the braunchis. For if thou gloriest, thou berist not the roote, but the roote thee.

Update Bible Version
do not glory over the branches: but if you glory, it is not you that bear the root, but the root you.

Webster's Bible Translation
Boast not against the branches. But if thou boastest, thou bearest not the root, but the root thee.

New English Translation
do not boast over the branches. But if you boast, remember that you do not support the root, but the root supports you.

New King James Version
do not boast against the branches. But if you do boast, remember that you do not support the root, but the root supports you.

New Living Translation
But you must not brag about being grafted in to replace the branches that were broken off. You are just a branch, not the root.

New Life Bible
Do not be proud. Do not think you are better than the branches that were broken off. If you are proud, remember that you do not hold the root. It is the root that holds you.

New Revised Standard
do not boast over the branches. If you do boast, remember that it is not you that support the root, but the root that supports you.

J.B. Rotherham Emphasized Bible
Be not boasting over the branches! Howbeit, if thou boast, it is not, thou, that bearest the root, but the root, thee!

Douay-Rheims Bible
Boast not against the branches. But if thou boast, thou bearest not the root: but the root thee.

Revised Standard Version
do not boast over the branches. If you do boast, remember it is not you that support the root, but the root that supports you.

Tyndale New Testament (1525)
bost not thy selfe agaynst the brauches. For yf thou bost thy selfe remember that thou bearest not the rote but the rote the.

Young's Literal Translation
do not boast against the branches; and if thou dost boast, thou dost not bear the root, but the root thee!

Miles Coverdale Bible (1535)
boost not thy selfe agaynst the braunches. Yf thou boost thy selfe agaynst them, then bearest not thou the rote, but the rote beareth the.

Mace New Testament (1729)
don't triumph over the branches: or if you do, remember the root is not dependent upon you, but you upon the root.

Simplified Cowboy Version
But don't go spoutin' off at the mouth. You're a grafted branch, not the roots of the tree.

Contextual Overview

¹Does this mean, then, that God is so fed up with Israel that he'll have nothing more to do with them? Hardly. Remember that I, the one writing these things, am an Israelite, a descendant of Abraham out of the tribe of Benjamin. You can't get much more Semitic than that! So we're not talking about repudiation. God has been too long involved with Israel, has too much invested, to simply wash his hands of them. Do you remember that time Elijah was agonizing over this same Israel and cried out in prayer? God, they murdered your prophets, They trashed your altars; I'm the only one left and now they're after me! And do you remember God's answer? I still have seven thousand who haven't quit, Seven thousand who are loyal to the finish. It's the same today. There's a fiercely loyal minority still—not many, perhaps, but probably more than you think. They're holding on, not because of what they think they're going to get out of it, but because they're convinced of God's grace and purpose in choosing them. If they were only thinking of their own immediate self-interest, they would have left long ago. And then what happened? Well, when Israel tried to be right with God on her own, pursuing her own self-interest, she didn't succeed. The chosen ones of God were those who let God pursue his interest in them, and as a result received his stamp of legitimacy. The "self-interest Israel" became thick-skinned toward God. Moses and Isaiah both commented on this: Fed up with their quarrelsome, self-centered ways, God blurred their eyes and dulled their ears, Shut them in on themselves in a hall of mirrors, and they're there to this day. David was upset about the same thing: I hope they get sick eating self-serving meals, break a leg walking their self-serving ways. I hope they go blind staring in their mirrors, get ulcers from playing at god. The next question is, "Are they down for the count? Are they out of this for good?" And the answer is a clear-cut No. Ironically when they walked out, they left the door open and the outsiders walked in. But the next thing you know, the Jews were starting to wonder if perhaps they had walked out on a good thing. Now, if their leaving triggered this worldwide coming of non-Jewish outsiders to God's kingdom, just imagine the effect of their coming back! What a homecoming! But I don't want to go on about them. It's you, the outsiders, that I'm concerned with now. Because my personal assignment is focused on the so-called outsiders, I make as much of this as I can when I'm among my Israelite kin, the so-called insiders, hoping they'll realize what they're missing and want to get in on what God is doing. If their falling out initiated this worldwide coming together, their recovery is going to set off something even better: mass homecoming! If the first thing the Jews did, even though it was wrong for them, turned out for your good, just think what's going to happen when they get it right! Behind and underneath all this there is a holy, God-planted, God-tended root. If the primary root of the tree is holy, there's bound to be some holy fruit. Some of the tree's branches were pruned and you wild olive shoots were grafted in. Yet the fact that you are now fed by that rich and holy root gives you no cause to crow over the pruned branches. Remember, you aren't feeding the root; the root is feeding you. It's certainly possible to say, "Other branches were pruned so that I could be grafted in!" Well and good. But they were pruned because they were deadwood, no longer connected by belief and commitment to the root. The only reason you're on the tree is because your graft "took" when you believed, and because you're connected to that belief-nurturing root. So don't get cocky and strut your branch. Be humbly mindful of the root that keeps you lithe and green. If God didn't think twice about taking pruning shears to the natural branches, why would he hesitate over you? He wouldn't give it a second thought. Make sure you stay alert to these qualities of gentle kindness and ruthless severity that exist side by side in God—ruthless with the deadwood, gentle with the grafted shoot. But don't presume on this gentleness. The moment you become deadwood, you're out of there. And don't get to feeling superior to those pruned branches down on the ground. If they don't persist in remaining deadwood, they could very well get grafted back in. God can do that. He can perform miracle grafts. Why, if he could graft you—branches cut from a tree out in the wild—into an orchard tree, he certainly isn't going to have any trouble grafting branches back into the tree they grew from in the first place. Just be glad you're in the tree, and hope for the best for the others. I want to lay all this out on the table as clearly as I can, friends. This is complicated. It would be easy to misinterpret what's going on and arrogantly assume that you're royalty and they're just rabble, out on their ears for good. But that's not it at all. This hardness on the part of insider Israel toward God is temporary. Its effect is to open things up to all the outsiders so that we end up with a full house. Before it's all over, there will be a complete Israel. As it is written, A champion will stride down from the mountain of Zion; he'll clean house in Jacob. And this is my commitment to my people: removal of their sins. From your point of view as you hear and embrace the good news of the Message, it looks like the Jews are God's enemies. But looked at from the long-range perspective of God's overall purpose, they remain God's oldest friends. God's gifts and God's call are under full warranty—never canceled, never rescinded. ³ There was a time not so long ago when you were on the outs with God. But then the Jews slammed the door on him and things opened up for you. Now they are on the outs. But with the door held wide open for you, they have a way back in. In one way or another, God makes sure that we all experience what it means to be outside so that he can personally open the door and welcome us back in. Have you ever come on anything quite like this extravagant generosity of God, this deep, deep wisdom? It's way over our heads. We'll never figure it out. Is there anyone around who can explain God? Anyone smart enough to tell him what to do? Anyone who has done him such a huge favor that God has to ask his advice? Everything comes from him; Everything happens through him; Everything ends up in him. Always glory! Always praise! Yes. Yes. Yes. ⁴The Loyal Minority Does this mean, then, that God is so fed up with Israel that he'll have nothing more to do with them? Hardly. Remember that I, the one writing these things, am an Israelite, a descendant of Abraham out of the tribe of Benjamin. You can't get much more Semitic than that! So we're not talking about repudiation. God has been too long involved with Israel, has too much invested, to simply wash his hands of them. Do you remember that time Elijah was agonizing over this same Israel and cried out in prayer? God, they murdered your prophets, They trashed your altars; I'm the only one left and now they're after me! And do you remember God's answer? I still have seven thousand who haven't quit, Seven thousand who are loyal to the finish. It's the same today. There's a fiercely loyal minority still—not many, perhaps, but probably more than you think. They're holding on, not because of what they think they're going to get out of it, but because they're convinced of God's grace and purpose in choosing them. If they were only thinking of their own immediate self-interest, they would have left long ago. And then what happened? Well, when Israel tried to be right with God on her own, pursuing her own self-interest, she didn't succeed. The chosen ones of God were those who let God pursue his interest in them, and as a result received his stamp of legitimacy. The "self-interest Israel" became thick-skinned toward God. Moses and Isaiah both commented on this: Fed up with their quarrelsome, self-centered ways, God blurred their eyes and dulled their ears, Shut them in on themselves in a hall of mirrors, and they're there to this day. David was upset about the same thing: I hope they get sick eating self-serving meals, break a leg walking their self-serving ways. I hope they go blind staring in their mirrors, get ulcers from playing at god. The next question is, "Are they down for the count? Are they out of this for good?" And the answer is a clear-cut No. Ironically when they walked out, they left the door open and the outsiders walked in. But the next thing you know, the Jews were starting to wonder if perhaps they had walked out on a good thing. Now, if their leaving triggered this worldwide coming of non-Jewish outsiders to God's kingdom, just imagine the effect of their coming back! What a homecoming! But I don't want to go on about them. It's you, the outsiders, that I'm concerned with now. Because my personal assignment is focused on the so-called outsiders, I make as much of this as I can when I'm among my Israelite kin, the so-called insiders, hoping they'll realize what they're missing and want to get in on what God is doing. If their falling out initiated this worldwide coming together, their recovery is going to set off something even better: mass homecoming! If the first thing the Jews did, even though it was wrong for them, turned out for your good, just think what's going to happen when they get it right! Behind and underneath all this there is a holy, God-planted, God-tended root. If the primary root of the tree is holy, there's bound to be some holy fruit. Some of the tree's branches were pruned and you wild olive shoots were grafted in. Yet the fact that you are now fed by that rich and holy root gives you no cause to crow over the pruned branches. Remember, you aren't feeding the root; the root is feeding you. It's certainly possible to say, "Other branches were pruned so that I could be grafted in!" Well and good. But they were pruned because they were deadwood, no longer connected by belief and commitment to the root. The only reason you're on the tree is because your graft "took" when you believed, and because you're connected to that belief-nurturing root. So don't get cocky and strut your branch. Be humbly mindful of the root that keeps you lithe and green. If God didn't think twice about taking pruning shears to the natural branches, why would he hesitate over you? He wouldn't give it a second thought. Make sure you stay alert to these qualities of gentle kindness and ruthless severity that exist side by side in God—ruthless with the deadwood, gentle with the grafted shoot. But don't presume on this gentleness. The moment you become deadwood, you're out of there. And don't get to feeling superior to those pruned branches down on the ground. If they don't persist in remaining deadwood, they could very well get grafted back in. God can do that. He can perform miracle grafts. Why, if he could graft you—branches cut from a tree out in the wild—into an orchard tree, he certainly isn't going to have any trouble grafting branches back into the tree they grew from in the first place. Just be glad you're in the tree, and hope for the best for the others. I want to lay all this out on the table as clearly as I can, friends. This is complicated. It would be easy to misinterpret what's going on and arrogantly assume that you're royalty and they're just rabble, out on their ears for good. But that's not it at all. This hardness on the part of insider Israel toward God is temporary. Its effect is to open things up to all the outsiders so that we end up with a full house. Before it's all over, there will be a complete Israel. As it is written, A champion will stride down from the mountain of Zion; he'll clean house in Jacob. And this is my commitment to my people: removal of their sins. From your point of view as you hear and embrace the good news of the Message, it looks like the Jews are God's enemies. But looked at from the long-range perspective of God's overall purpose, they remain God's oldest friends. God's gifts and God's call are under full warranty—never canceled, never rescinded. There was a time not so long ago when you were on the outs with God. But then the Jews slammed the door on him and things opened up for you. Now they are on the outs. But with the door held wide open for you, they have a way back in. In one way or another, God makes sure that we all experience what it means to be outside so that he can personally open the door and welcome us back in. Have you ever come on anything quite like this extravagant generosity of God, this deep, deep wisdom? It's way over our heads. We'll never figure it out. Is there anyone around who can explain God? Anyone smart enough to tell him what to do? Anyone who has done him such a huge favor that God has to ask his advice? Everything comes from him; Everything happens through him; Everything ends up in him. Always glory! Always praise! Yes. Yes. Yes. ⁵The Loyal Minority Does this mean, then, that God is so fed up with Israel that he'll have nothing more to do with them? Hardly. Remember that I, the one writing these things, am an Israelite, a descendant of Abraham out of the tribe of Benjamin. You can't get much more Semitic than that! So we're not talking about repudiation. God has been too long involved with Israel, has too much invested, to simply wash his hands of them. Do you remember that time Elijah was agonizing over this same Israel and cried out in prayer? God, they murdered your prophets, They trashed your altars; I'm the only one left and now they're after me! And do you remember God's answer? I still have seven thousand who haven't quit, Seven thousand who are loyal to the finish. It's the same today. There's a fiercely loyal minority still—not many, perhaps, but probably more than you think. They're holding on, not because of what they think they're going to get out of it, but because they're convinced of God's grace and purpose in choosing them. If they were only thinking of their own immediate self-interest, they would have left long ago. And then what happened? Well, when Israel tried to be right with God on her own, pursuing her own self-interest, she didn't succeed. The chosen ones of God were those who let God pursue his interest in them, and as a result received his stamp of legitimacy. The "self-interest Israel" became thick-skinned toward God. Moses and Isaiah both commented on this: Fed up with their quarrelsome, self-centered ways, God blurred their eyes and dulled their ears, Shut them in on themselves in a hall of mirrors, and they're there to this day. David was upset about the same thing: I hope they get sick eating self-serving meals, break a leg walking their self-serving ways. I hope they go blind staring in their mirrors, get ulcers from playing at god. The next question is, "Are they down for the count? Are they out of this for good?" And the answer is a clear-cut No. Ironically when they walked out, they left the door open and the outsiders walked in. But the next thing you know, the Jews were starting to wonder if perhaps they had walked out on a good thing. Now, if their leaving triggered this worldwide coming of non-Jewish outsiders to God's kingdom, just imagine the effect of their coming back! What a homecoming! But I don't want to go on about them. It's you, the outsiders, that I'm concerned with now. Because my personal assignment is focused on the so-called outsiders, I make as much of this as I can when I'm among my Israelite kin, the so-called insiders, hoping they'll realize what they're missing and want to get in on what God is doing. If their falling out initiated this worldwide coming together, their recovery is going to set off something even better: mass homecoming! If the first thing the Jews did, even though it was wrong for them, turned out for your good, just think what's going to happen when they get it right! Behind and underneath all this there is a holy, God-planted, God-tended root. If the primary root of the tree is holy, there's bound to be some holy fruit. Some of the tree's branches were pruned and you wild olive shoots were grafted in. Yet the fact that you are now fed by that rich and holy root gives you no cause to crow over the pruned branches. Remember, you aren't feeding the root; the root is feeding you. It's certainly possible to say, "Other branches were pruned so that I could be grafted in!" Well and good. But they were pruned because they were deadwood, no longer connected by belief and commitment to the root. The only reason you're on the tree is because your graft "took" when you believed, and because you're connected to that belief-nurturing root. So don't get cocky and strut your branch. Be humbly mindful of the root that keeps you lithe and green. If God didn't think twice about taking pruning shears to the natural branches, why would he hesitate over you? He wouldn't give it a second thought. Make sure you stay alert to these qualities of gentle kindness and ruthless severity that exist side by side in God—ruthless with the deadwood, gentle with the grafted shoot. But don't presume on this gentleness. The moment you become deadwood, you're out of there. And don't get to feeling superior to those pruned branches down on the ground. If they don't persist in remaining deadwood, they could very well get grafted back in. God can do that. He can perform miracle grafts. Why, if he could graft you—branches cut from a tree out in the wild—into an orchard tree, he certainly isn't going to have any trouble grafting branches back into the tree they grew from in the first place. Just be glad you're in the tree, and hope for the best for the others. I want to lay all this out on the table as clearly as I can, friends. This is complicated. It would be easy to misinterpret what's going on and arrogantly assume that you're royalty and they're just rabble, out on their ears for good. But that's not it at all. This hardness on the part of insider Israel toward God is temporary. Its effect is to open things up to all the outsiders so that we end up with a full house. Before it's all over, there will be a complete Israel. As it is written, A champion will stride down from the mountain of Zion; he'll clean house in Jacob. And this is my commitment to my people: removal of their sins. From your point of view as you hear and embrace the good news of the Message, it looks like the Jews are God's enemies. But looked at from the long-range perspective of God's overall purpose, they remain God's oldest friends. God's gifts and God's call are under full warranty—never canceled, never rescinded. There was a time not so long ago when you were on the outs with God. But then the Jews slammed the door on him and things opened up for you. Now they are on the outs. But with the door held wide open for you, they have a way back in. In one way or another, God makes sure that we all experience what it means to be outside so that he can personally open the door and welcome us back in. Have you ever come on anything quite like this extravagant generosity of God, this deep, deep wisdom? It's way over our heads. We'll never figure it out. Is there anyone around who can explain God? Anyone smart enough to tell him what to do? Anyone who has done him such a huge favor that God has to ask his advice? Everything comes from him; Everything happens through him; Everything ends up in him. Always glory! Always praise! Yes. Yes. Yes. ⁶The Loyal Minority Does this mean, then, that God is so fed up with Israel that he'll have nothing more to do with them? Hardly. Remember that I, the one writing these things, am an Israelite, a descendant of Abraham out of the tribe of Benjamin. You can't get much more Semitic than that! So we're not talking about repudiation. God has been too long involved with Israel, has too much invested, to simply wash his hands of them. Do you remember that time Elijah was agonizing over this same Israel and cried out in prayer? God, they murdered your prophets, They trashed your altars; I'm the only one left and now they're after me! And do you remember God's answer? I still have seven thousand who haven't quit, Seven thousand who are loyal to the finish. It's the same today. There's a fiercely loyal minority still—not many, perhaps, but probably more than you think. They're holding on, not because of what they think they're going to get out of it, but because they're convinced of God's grace and purpose in choosing them. If they were only thinking of their own immediate self-interest, they would have left long ago. ⁷And then what happened? Well, when Israel tried to be right with God on her own, pursuing her own self-interest, she didn't succeed. The chosen ones of God were those who let God pursue his interest in them, and as a result received his stamp of legitimacy. The "self-interest Israel" became thick-skinned toward God. Moses and Isaiah both commented on this: Fed up with their quarrelsome, self-centered ways, God blurred their eyes and dulled their ears, Shut them in on themselves in a hall of mirrors, and they're there to this day. David was upset about the same thing: I hope they get sick eating self-serving meals, break a leg walking their self-serving ways. I hope they go blind staring in their mirrors, get ulcers from playing at god. ¹¹The next question is, "Are they down for the count? Are they out of this for good?" And the answer is a clear-cut No. Ironically when they walked out, they left the door open and the outsiders walked in. But the next thing you know, the Jews were starting to wonder if perhaps they had walked out on a good thing. Now, if their leaving triggered this worldwide coming of non-Jewish outsiders to God's kingdom, just imagine the effect of their coming back! What a homecoming! ¹³But I don't want to go on about them. It's you, the outsiders, that I'm concerned with now. Because my personal assignment is focused on the so-called outsiders, I make as much of this as I can when I'm among my Israelite kin, the so-called insiders, hoping they'll realize what they're missing and want to get in on what God is doing. If their falling out initiated this worldwide coming together, their recovery is going to set off something even better: mass homecoming! If the first thing the Jews did, even though it was wrong for them, turned out for your good, just think what's going to happen when they get it right! ¹⁶Behind and underneath all this there is a holy, God-planted, God-tended root. If the primary root of the tree is holy, there's bound to be some holy fruit. Some of the tree's branches were pruned and you wild olive shoots were grafted in. Yet the fact that you are now fed by that rich and holy root gives you no cause to crow over the pruned branches. Remember, you aren't feeding the root; the root is feeding you. ¹⁹It's certainly possible to say, "Other branches were pruned so that I could be grafted in!" Well and good. But they were pruned because they were deadwood, no longer connected by belief and commitment to the root. The only reason you're on the tree is because your graft "took" when you believed, and because you're connected to that belief-nurturing root. So don't get cocky and strut your branch. Be humbly mindful of the root that keeps you lithe and green.

Bible Verse Review
  from Treasury of Scripure Knowledge

Boast not: Romans 11:20, Romans 3:27, 1 Kings 20:11, Proverbs 16:18, Matthew 26:33, Luke 18:9-11, 1 Corinthians 10:12

thou bearest: Romans 4:16, Zechariah 8:20-23, John 10:16, Galatians 3:29, Ephesians 2:19, Ephesians 2:20

Reciprocal: Judges 7:2 - Israel Isaiah 32:15 - wilderness Acts 26:20 - and then Romans 11:24 - General Colossians 2:7 - Rooted 2 Timothy 3:2 - boasters

Gill's Notes on the Bible

Boast not against the branches,.... Those that were broken off: the apostle would not have them vaunt it over them, despise them, and trample upon them; but pity them, and pray for and be abundantly thankful and humbled before God, under a sense of Ida sovereign and distinguishing grace, who had settled them in a Gospel church state, who were before comparable to a wild olive tree; and much less should they glory over the believing Jews, among whom they were, there being no difference between them, for they were all one in Christ Jesus:

but if thou boast; but if such a vain temper of mind should prevail, he suggests they would do well to sit down and consider what little reason they had on their side to glory; and if such glorying and boasting, one against another was lawful, the Jews had the greatest reason for it; for, adds the apostle,

thou bearest not the root, but the root thee. The Jews received no advantages from the Gentiles, but on the contrary the Gentiles from the Jews, to whom were committed the oracles of God, and by whom they were faithfully kept and transmitted to the Gentiles; the Gospel itself came out first from among them; the first preachers of it were Jews, who carried it into the Gentile world, where it was greatly succeeded to the conversion of many, who by this means were brought into a Gospel church state, and so enjoyed all the privileges they did: yea, Christ himself, according to the flesh, came of them, was sent unto them, was the minister of them, lived and died among them, and wrought out the great salvation for his people; hence "salvation" itself is said to be "of the Jews", John 4:22, so that the root and foundation of all their enjoyments were from the Jews, and not those of the Jews from them; hence there was no room, nor reason, for boasting against them, and vaunting it over them.

Barnes' Notes on the Bible

Boast not ... - The tendency of people is to triumph over one that is fallen and rejected. The danger of pride and boasting on account of privileges is not less in the church than elsewhere. Paul saw that some of the Gentiles might be in danger of exultation over the fallen Jews, and therefore cautions them against it. The ingrafted shoot, deriving all its vigor and fruitfulness from the stock of another tree, ought not to boast against the branches.

But if thou boast - If thou art so inconsiderate and wicked, so devoid of humility, and lifted up with pride, as to boast, yet know that there is no occasion for it. If there were occasion for boasting, it would rather be in the root or stock which sustains the branches; least of all can it be in those which were grafted in, having been before wholly unfruitful.

Thou bearest not the root - The source of all your blessings is in the ancient stock. It is clear from this, that the apostle regarded the church as one; and that the Christian economy was only a prolongation of the ancient dispensation. The tree, even with a part of the branches removed. and others ingrafted, retains its identity, and is never regarded as a different tree.

Clarke's Notes on the Bible

Verse 18. Boast not against the branches. — While you are ready to acknowledge that you were included in the covenant made with Abraham, and are now partakers of the same blessings with him, do not exult over, much less insult, the branches, his present descendants, whose place you now fill up, according to the election of grace: for remember, ye are not the root, nor do ye bear the root, but the root bears you. You have not been the means of deriving any blessing on the Jewish people; but through that very people, which you may be tempted to despise, all the blessing and excellencies which you enjoy have been communicated to you.