He sent the troops out in three groups, placing one group under Joab, one under Joab’s brother Abishai son of Zeruiah, and one under Ittai, the man from Gath. The king told his troops, “I am going out with you.”
And David told them to tell Amasa, “Since you are my own flesh and blood, like Joab, may God strike me and even kill me if I do not appoint you as commander of my army in his place.”
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.
They summoned King Hezekiah, but the king sent these officials to meet with them: Eliakim son of Hilkiah, the palace administrator; Shebna the court secretary; and Joah son of Asaph, the royal historian.
Then Eliakim son of Hilkiah, the palace administrator; Shebna the court secretary; and Joah son of Asaph, the royal historian, went back to Hezekiah. They tore their clothes in despair, and they went in to see the king and told him what the Assyrian chief of staff had said.
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.