1 Chronicles 25:1 - Wesley's Explanatory Notes

And captains — All the princes of Israel, with the priests and the Levites, whom David gathered together, 1 Chronicles 23:2, for this very end, that with their approbation and consent, all these things might be established; who are here fitly called the captains of the host; for the princes were, under David, the chief captains of the militia of the kingdom; and as the Levites are called an host, and the Lord's host, because of their number and order in holy ministrations; so these priests and Levites were the captains and governors of the rest. Separated — Distributed them into their several ranks: which, tho' chiefly done by David as a prophet, and by Divine direction, yet is imputed in part to the captains of the host, because it was done with their concurrence and approbation. The service — To the service of God under the conduct of these persons. Prophecy — Praise God by singing the psalms of David, and other sacred songs made by themselves, who were prophets, or by other prophets or holy men of God. Workmen — Of the persons employed in this sacred work. This good work it seems Samuel revived, but did not live to bring it to perfection. Let each in his day do what he can for God, tho' he cannot carry it so far as he would. When we are gone, God can raise up others to build on our foundation, and bring forth the top — stone.