About the same time, Joab son of Zeruiah led David’s troops out and met them at the pool of Gibeon. The two groups sat down there, facing each other from opposite sides of the pool.
As they arrived at the great stone in Gibeon, Amasa met them. Joab was wearing his military tunic with a dagger strapped to his belt. As he stepped forward to greet Amasa, he slipped the dagger from its sheath.
“And there is something else. You know what Joab son of Zeruiah did to me when he murdered my two army commanders, Abner son of Ner and Amasa son of Jether. He pretended that it was an act of war, but it was done in a time of peace, staining his belt and sandals with innocent blood.
David had said to his troops, “Whoever is first to attack the Jebusites will become the commander of my armies!” And Joab, the son of David’s sister Zeruiah, was first to attack, so he became the commander of David’s armies.
Asahel, the brother of Joab, was commander of the fourth division of 24,000 troops, which was on duty during the fourth month. Asahel was succeeded by his son Zebadiah.
“Who will volunteer to go in there with me?” David asked Ahimelech the Hittite and Abishai son of Zeruiah, Joab’s brother. “I’ll go with you,” Abishai replied.