Commentaries
15:1-24 Wise and good men may be guilty of oversights, which they will correct, as soon as they are aware of them. David does not try to justify what had been done amiss, nor to lay the blame on others; but he owns himself guilty, with others, of not seeking God in due order
3. David gathered all Israel together—Some are of opinion that this was done on one of the three great festivals, but at whatever time the ceremonial took place, it was of great importance to summon a general convocation of the people, many of whom, from the long-continued disorders of the kingdom, might have had little or no opportunity of knowing anything of the ark, which had been allowed to remain so long in obscurity and neglect.