Exodus 15:17 (a) GOD expected His people to grow in the soil of the new land, and to produce a great crop for His glory. We do not plant anything that is dead, nor anything that is inanimate. We plant things that are living, and expect growth and fruit from it. So Israel had the living GOD, and the living Word. He placed them in Palestine, and expected a great harvest for the glory of His Name. (See2Sa 7:10; 1 Chronicles 17:9; Isaiah 5:2; Isaiah 60:21; Jeremiah 2:21; Jeremiah 32:41).
Psalm 1:3 (b) This is a type or symbol of the Lord placing a Christian in the church or in the harvest field where He wants him. We say that GOD planted Livingstone in Africa and Moody in Chicago. GOD places His child in the part of His harvest field where he can produce the best crop for his Master. (See also Psalm 92:13, Ezekiel 17:8). It also expresses the act of placing the Word of GOD in human hands and hearts by preachers and evangelists. This is evidently the meaning in1Co 3:6. It is also descriptive of the child of GOD or even of the sinner in regard to his growth in any city or village where he may live as in Matthew 15:13.
Psalm 128:3 (a) The Lord is promising to the parents that their children will grow as plants grow, and will become able, matured men and women. (See Psalm 144:12).