12 and said unto them, Ye are the heads of the fathers' [houses] of the Levites: sanctify yourselves, both ye and your brethren, that ye may bring up the ark of Jehovah, the God of Israel, unto [the place] that I have prepared for it.
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
Matthew Henry's Commentary on 1 Chronicles 15:12
Commentary on 1 Chronicles 15:1-24
(Read 1 Chronicles 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