I believe this is one of the commandments we must uphold.
And you don't know what's going to be asked and judgement day.
"Nevertheless for David's sake did the LORD his God give him a lamp in Jerusalem, to set up his son after him, and to establish Jerusalem: Because David did that which was right in the eyes of the LORD, and turned not aside from any thing that he commanded him all the days of his life, save only in the matter of Uriah the Hittite." (1 Kings 15:4-5)
And how did Jesus refer to David? Jesus said,
"I am the root and the offspring of David, and the bright and morning star. (Revelation 22:16, the last book of the Bible)
So, the "killer" David was not only perfect in all his ways according to God (except, of course, in his adultery), but Jesus gave David the ultimate honor.