TSK · 1 Chronicles 11:20

The three sons of Zeruiah were there– Joab, Abishai, and Asahel.(Now Asahel was as quick on his feet as one of the gazelles in the field.)

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.”

But Abishai the son of Zeruiah came to David’s aid, striking the Philistine down and killing him. Then David’s men took an oath saying,“You will not go out to battle with us again! You must not extinguish the lamp of Israel!”

Their sisters were Zeruiah and Abigail. Zeruiah’s three sons were Abshai, Joab, and Asahel.