John Gills Exposition of the Bible Commentary - 1 Chronicles 16:41
And with them ,.... That is, with Zadok, and the priests with him at Gibeon: he left Heman and Jeduthun : or Ethan, two principal singers: and the rest that were chosen, who were expressed by name ; see 1 Chronicles 16:18 . to give thanks to the Lord, because his mercy endureth for ever ; to praise him for his benefits, flowing from his grace and mercy continually. read more
Matthew Henry's Complete Commentary - 1 Chronicles 16:37-43
The worship of God is not only to be the work of a solemn day now and then, brought in to grace a triumph; but it ought to be the work of every day. David therefore settles it here for a constancy, puts it into a method, which he obliged those that officiated to observe in their respective posts. In the tabernacle of Moses, and afterwards in the temple of Solomon, the ark and the altar were together; but, ever since Eli's time, they had been separated, and still continued so till the temple... read more