1 Chronicles 11:20
And Abishai the brother of Joab, he was chief of the three: for lifting up his spear against three hundred, he slew them, and had a name among the three.
Cross-reference
1 Chronicles 2:16
Historical context
1 Chronicles 2:16 lists Abishai and his brothers as sons of Zeruiah, confirming the family relationship mentioned here.
2 Samuel 2:18
Historical context
2 Samuel 2:18 names Abishai as one of the three sons of Zeruiah alongside Joab and Asahel.
2 Samuel 23:18–19
Parallel
2 Samuel 23:18-19 describes Abishai as chief of the three with nearly identical language — a parallel account of David's mighty men.