2 Samuel 18:2

18:2 David then sent out the army – a third under the leadership of Joab, a third under the leadership of Joab’s brother Abishai son of Zeruiah, and a third under the leadership of Ittai the Gittite. The king said to the troops, “I too will indeed march out with you.”

2 Samuel 3:3

3:3 His second son was Kileab, born to Abigail the widow of Nabal the Carmelite. His third son was Absalom, the son of Maacah daughter of King Talmai of Geshur.

2 Samuel 1:2

1:2 On the third day a man arrived from the camp of Saul with his clothes torn and dirt on his head. When he approached David, the man threw himself to the ground.

2 Samuel 23:18

23:18 Abishai son of Zeruiah, the brother of Joab, was head of the three. He killed three hundred men with his spear and gained fame among the three.