While they were at the large rock in Gibeon, Amasa caught up with them. Joab was dressed for battle. Over his clothes was a belt around his waist with a dagger in its sheath. As he moved forward, it fell out.
In addition, you know what Joab, son of Zeruiah, did to me and what he did to Abner, son of Ner, and Amasa, son of Jether, the two army commanders of Israel. He murdered them, spilling the blood of war during a time of peace. He smeared the blood of war on his belt and on his sandals.
David had said, “Whoever is first to attack the Jebusites will be my commander-in-chief.” Since Joab, son of Zeruiah, was the first, he became commander-in-chief.
David asked Ahimelech the Hittite and Abishai, son of Zeruiah, Joab's brother, “Who wants to go with me into the camp to Saul?” “I'll go with you,” Abishai replied.