Abisha’i, or Abish’a-i (father of a gift), the eldest of the three sons of Zeruiah, David’s sister, and brother to Joab and Asahel. 1 Chron. 2:16. Like his two brothers he was the devoted follower of David. He was his companion in the desperate night expedition to the camp of Saul. 1 Sam. 26:6-9. (b.c. 1055.) On the outbreak of Absalom’s rebellion he remained true to the king, and commanded a third part of the army in the decisive battle against Absalom. He rescued David from the hands of a gigantic Philistine, Ishbi-benob. 2 Sam. 21:17. His personal prowess on this, as on another occasion, when he fought single-handed against three hundred, won for him a place as captain of the second three of David’s mighty men. 2 Sam. 23:18; 1 Chron. 11:20.