2 Samuel 19:19-23 - David's Mercy To Shimei
19 and said unto him, "Let not my lord impute wickedness unto me, nor let him not remember the wickedness that thy servant did, when my lord the king departed out of Jerusalem that the king should take it to heart. 20 For thy servant doth know how that I have done amiss. And therefore behold, I am the first this day of all the house of Joseph that am come to meet my lord the king."
21 But Abishai the son of Zeruiah answered and said, "Shall Shimei not die for that cause: which cursed the LORD's anointed?"
22 And the king said, "What matter is between you and me ye sons of Zeruiah, that ye should this day be adversaries unto me? There shall no man die this day in Israel: for I know that I am this day king over Israel." 23 And the king said unto Shimei, "Thou shalt not die," and sware unto him.