Charles Ellicott Commentary 1 Kings 15:5

"because David did that which was right in the eyes of Jehovah, and turned not aside from anything that he commanded him all the days of his life, save only in the matter of Uriah the Hittite." — 1 Kings 15:5 (ASV)

Save only in the matter of Uriah.—In this passage alone do we find this qualification of the praise of David. In the Vatican manuscript and other manuscripts of the Septuagint it is omitted. Possibly it is a marginal note which has crept into the text, or a comment of the compiler of the book on the language of the annals from which he drew.