1 Kings 2:5-9

5“You know what Joab son of Zeruiah did to me – how he murdered two commanders of the Israelite armies, Abner son of Ner and Amasa son of Jether. During peacetime he struck them down like he would in battle; when he shed their blood as if in battle, he stained his own belt and the sandals on his feet.

6Do to him what you think is appropriate, but don’t let him live long and die a peaceful death.

7“Treat fairly the sons of Barzillai of Gilead and provide for their needs, because they helped me when I had to flee from your brother Absalom.

8“Note well, you still have to contend with Shimei son of Gera, the Benjaminite from Bahurim, who tried to call down upon me a horrible judgment when I went to Mahanaim. He came down and met me at the Jordan, and I solemnly promised him by the Lord, ‘I will not strike you down with the sword.’

9But now don’t treat him as if he were innocent. You are a wise man and you know how to handle him; make sure he has a bloody death.”