Some of David's actions are very characteristic of himself; there are other actions quite out of harmony with his character. This psalm of thanksgiving belongs to the former order. It is quite like David, at the conclusion of his military enterprises, to cast his eye gratefully over the whole, and acknowledge the goodness and mercy that had followed him all along. Unlike many, he was as careful to thank God for mercies past and present as to entreat Him for mercies to come. The whole Book of Psalms resounds with halleluiahs, especially the closing part. In the song before us we have something like a grand halleluiah, in which thanks are given for all the deliverances and mercies of the past, and unbounded confidence expressed in God's mercy and goodness for the time to come. The date of this song is not to be determined by the place which it occupies in the history. We have already seen that the last few chapters of Samuel consist of supplementary narratives, not introduced at their regular places, but needful to give completeness to the history. It is likely that this psalm was written considerably before the end of David's reign. Two considerations make it all but certain that its date is earlier than Absalom's rebellion. In the first place, the mention of the name of Saul in the first verse--"in the day when God delivered him out of the hand of all his enemies and out of the hand of Saul"--would seem to imply that the deliverance from Saul was somewhat recent, certainly not so remote as it would have been at the end of David's reign. And secondly, while the affirmation of David's sincerity and honesty in serving God might doubtless have been made at any period of his life, yet some of his expressions would not have been likely to be used after his deplorable fall. It is not likely that after that, he would have spoken, for example, of the cleanness of his hands, stained as they had been by wickedness that could hardly have been surpassed. On the whole, it seems most likely that the psalm was written about the time referred to in 2 Sam. vii. 1--"when the Lord had given him rest from all his enemies round about." This was the time when it was in his heart to build the temple, and we know from that and other circumstances that he was then in a state of overflowing thankfulness. Besides the introduction, the song consists of three leading parts not very definitely separated from each other, but sufficiently marked to form a convenient division, as follows:-- I. Introduction: the leading thought of the song, an adoring acknowledgment of what God had been and was to David (vv. 2-4). II. A narrative of the Divine interpositions on his behalf, embracing his dangers, his prayers, and the Divine deliverances in reply (vv. 5-19). III. The grounds of his protection and success (vv. 20-30).