Verse 1. - David spake. The introduction was probably written by the prophet who compiled the Books of Samuel. The scribe who collected the Book of Psalms would be a priest, and he has repeated it with one or two additions, the most important of which is that the psalm was written "by David the servant of Jehovah." This title; meaning the minister or vicegerent of Jehovah, is one so high that it would certainly not have been given to David in his lifetime; nor was it even until Moses was dead that he was honoured with this rank (Deuteronomy 34:5). But what was David's right to this title, which put him on a level with Moses? It was this: In adding to the sacrificial ritual enacted by Moses a daily service in the temple of sacred minstrelsy and songs, David was acting with higher powers than were ever exercised by any other person. For though, as we have seen, Samuel was the originator of these services in his schools, yet. there is a wide difference between private and public services; and David made his anthems part of the national liturgy. But it would only be when the halo of long use had gathered round his holy psalmody that David would be placed on in equality with Moses, and his authority a institute a new ritual for the nation be recognized.

22:1-51 David's psalm of thanksgiving. - This chapter is a psalm of praise; we find it afterwards nearly as Ps 18. They that trust God in the way of duty, shall find him a present help in their greatest dangers: David did so. Remarkable preservations should be particularly mentioned in our praises. We shall never be delivered from all enemies till we get to heaven. God will preserve all his people, 2Ti 4:18. Those who receive signal mercies from God, ought to give him the glory. In the day that God delivered David, he sang this song. While the mercy is fresh, and we are most affected with it, let the thank-offering be brought, to be kindled with the fire of that affection. All his joys and hopes close, as all our hopes should do, in the great Redeemer.And David spake unto the Lord the words of this song in the day that the Lord had delivered him out of the hand of all his enemies, and out of the hand of Saul. See Gill on Psalm 18:1.