2 Samuel 19:19-23 - David's Mercy To Shimei
19 and he said unto the king - Let not my lord impute to me iniquity, neither do thou remember the perverseness of thy servant, on the day that thou wentest out, my lord O king, from Jerusalem, that the king should lay it upon his heart. 20 For thy servant doth know, that, I, sinned, - lo! therefore, I have arrived to-day, as the first of all the house of Joseph, to come down to meet my lord the king.
21 Then responded Abishai, son of Zeruiah, and said, For this, shall not Shimei be put to death, for that he cursed the Anointed of Yahweh?
22 But David said, What have I in common with you, ye sons of Zeruiah, for ye would become to me, to-day, a very traitor! Shall there, to-day, be put to death a man in Israel? for do I not know, that, to-day, I, am king over Israel? 23 Then said the king unto Shimei - Thou shalt not die. And the king sware to him.