Thematic Bible: David forgives shimei

So the king said to Shimei, You will not be put to death. And the king gave him his oath.

Then Abishai, the son of Zeruiah, said to the king, Is this dead dog to go on cursing my lord the king? let me go over and take off his head. And the king said, What have I to do with you, you sons of Zeruiah? Let him go on cursing, for the Lord has said, Put a curse on David, and who then may say, Why have you done so? And David said to Abishai and to all his servants, You see how my son, the offspring of my body, has made designs against my life: how much more then may this Benjamite do so? Let him be, and let him go on cursing; for the Lord has given him orders. read more.
It may be that the Lord will take note of my wrongs, and give me back good in answer to his cursing of me today. So David and his men went on their way: and Shimei went by the hillside parallel with them, cursing and sending stones and dust at him.

Now you have with you Shimei, the son of Gera the Benjamite of Bahurim, who put a bitter curse on me on the day when I went to Mahanaim; but he came down to see me at Jordan, and I gave him my oath by the Lord, saying, I will not put you to death by the sword. But do not let him be free from punishment, for you are a wise man; and it will be clear to you what you have to do with him; see that his white head goes down to the underworld in blood.