2 Chronicles 2:1-10
The relationship between Hiram, king of Tyre, and Solomon is representative of the relationship which Israel will have with all the nations of the earth during the thousand year reign. That is when "the earth shall be full of the knowledge of the LORD, as the waters cover the sea. And in that day there shall be a root of Jesse, which shall stand for an ensign to the people; to it shall the Gentiles seek: and his rest shall be glorious". (Isaiah 11:9-10).
In addition to all that, in his affection for the house of God, David had gathered together, he had also prepared workers to carry out the work (end of v. 7; see also 1 Chronicles 22:15-16). So it is with the work of the Lord today. He requires that the servants are carefully prepared for every task for Him. Starting a task too soon can subsequently lead to a job badly done. God who has prepared the works, has also called, then trained the workers to do them. Ephesians 2:10 reminds us that "we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them".