7. Then on that day David delivered first this psalm—Among the other preparations for this solemn inauguration, the royal bard had composed a special hymn for the occasion. Doubtless it had been previously in the hands of Asaph and his assistants, but it was now publicly committed to them as they entered for the first time on the performance of their sacred duties. It occupies the greater part of this chapter (1Ch 16:8-36), and seems to have been compiled from other psalms of David, previously known to the Israelites, as the whole of it will be found, with very slight variations, in Ps 96:1-13; 105:1-15; 106:47, 48. In the form, however, in which it is given by the sacred historian, it seems to have been the first psalm given for use in the tabernacle service. Abounding, as it does, with the liveliest ascriptions of praise to God for the revelation of His glorious character and the display of His marvellous works and containing, as it does, so many pointed allusions to the origin, privileges, and peculiar destiny of the chosen people, it was admirably calculated to animate the devotions and call forth the gratitude of the assembled multitude.

     36. all the people said, Amen—(Compare Ps 72:19, 20; 106:48). In the former, the author of the doxology utters the "amen" himself, while in the latter the people are exhorted to say "amen." This may arise from the fact that the latter psalm originally concluded with the injunction to say "amen." But in this historical account of the festival, it was necessary to relate that the people obeyed this injunction on the occasion referred to, and therefore the words "let them praise," were altered into "and they praised" [BERTHEAU].