So Joab son of Zeruiah and David’s soldiers marched out and met them by the pool of Gibeon. The two groups took up positions on opposite sides of the pool.
They were at the great stone in Gibeon when Amasa joined them. Joab was wearing his uniform and over it was a belt around his waist with a sword in its sheath. As he approached, the sword fell out.
“You also know what Joab son of Zeruiah did to me and what he did to the two commanders of Israel’s army, Abner son of Ner and Amasa son of Jether. He murdered them in a time of peace to avenge blood shed in war. He spilled that blood on his own waistband and on the sandals of his feet.
Then David asked Ahimelech the Hittite and Joab’s brother Abishai son of Zeruiah, “Who will go with me into the camp to Saul? ” “I’ll go with you,” answered Abishai.