2 Samuel 14:33

So Joab came to the king and told him; and when he David, had called for Absalom, he came to the king, and bowed himself on his face to the ground before the king, as a token of the usual homage paid to the sovereign, but not as a mark of penitence; and the king kissed Absalom. So the matter was patched up, sincerely enough on the part of David, but without this spirit on the part of Absalom. Even believers find that it is altogether against their sinful nature really to forgive and to forget any wrong that has been done. But the fear of God will gradually overcome the evil with good, conquer hatred and revenge, and be reconciled to the person who has done wrong.