1 Kings 2:43 (KJV)

And Shimei said unto the king, The saying is good: as my lord the king hath said, so will thy servant do. And Shimei dwelt in Jerusalem many days.

And it came to pass at the end of three years, that two of the servants of Shimei ran away unto Achish son of Maachah king of Gath. And they told Shimei, saying, Behold, thy servants be in Gath.

And Shimei arose, and saddled his ass, and went to Gath to Achish to seek his servants: and Shimei went, and brought his servants from Gath.

And it was told Solomon that Shimei had gone from Jerusalem to Gath, and was come again.

And the king sent and called for Shimei, and said unto him, Did I not make thee to swear by the LORD, and protested unto thee, saying, Know for a certain, on the day thou goest out, and walkest abroad any whither, that thou shalt surely die? and thou saidst unto me, The word that I have heard is good.

The king said moreover to Shimei, Thou knowest all the wickedness which thine heart is privy to, that thou didst to David my father: therefore the LORD shall return thy wickedness upon thine own head;

And king Solomon shall be blessed, and the throne of David shall be established before the LORD for ever.

So the king commanded Benaiah the son of Jehoiada; which went out, and fell upon him, that he died. And the kingdom was established in the hand of Solomon.