2 Samuel 20:9

So when Abner returned to Hebron, Joab took him aside into the middle of the gate to speak with him privately, and there he struck him in the belly so that he died on account of the blood of Asahel his brother.

And when a man came near to prostrate himself before him, he would send forth his hand and take hold of him and kiss him.

And Absalom set Amasa over the army in place of Joab. Now Amasa was the son of a man whose name was Ithra the Israelite, who went in to Abigail the daughter of Nahash, sister of Zeruiah, Joab’s mother.

Then the king said, “Is there peace with the young man Absalom?” And Ahimaaz said, “When Joab sent the king’s servant, and your servant, I saw a great tumult, but I did not know what it was.”

But Abishai the son of Zeruiah helped him, and struck the Philistine and put him to death. Then the men of David swore to him, saying, “You shall not go out again with us to battle, so that you do not extinguish the lamp of Israel.”

“And Yahweh will return his blood on his own head, because he fell upon two men more righteous and better than he and killed them with the sword, but my father David did not know it: Abner the son of Ner, commander of the army of Israel, and Amasa the son of Jether, commander of the army of Judah.

Then Ishmael the son of Nethaniah and the ten men who were with him arose and struck down Gedaliah the son of Ahikam, the son of Shaphan, with the sword and put to death the one whom the king of Babylon had appointed over the land.