1 Kings 2:41-46

41And when Solomon was told that Shimei had gone from Jerusalem to Gath and returned,

42the king sent and summoned Shimei and said to him, "Did I not make you swear by the Lord and solemnly warn you, saying, 'Know for certain that on the day you go out and go to any place whatever, you shall die'? And you said to me, 'What you say is good; I will obey.'

43Why then have you not kept your oath to the Lord and the commandment with which I commanded you?"

44The king also said to Shimei, "You know in your own heart all the harm that you did to David my father. So the Lord will bring back your harm on your own head.

45But King Solomon shall be blessed, and the throne of David shall be established before the Lord forever."

46Then the king commanded Benaiah the son of Jehoiada, and he went out and struck him down, and he died. So the kingdom was established in the hand of Solomon.