Now Abishai, the brother of Joab, was chief of the thirty. And he wielded his spear against three hundred men and slew them, and won a name beside the three.
And David sent forth the army, one third under the command of Joab, one third under the command of Abishai the son of Zeruiah, Joab's brother, and one third under the command of Ittai the Gittite. And the king said to the men, “I myself will also go out with you.”
And David said to Abishai, “Now Sheba the son of Bichri will do us more harm than Absalom; take your lord's servants and pursue him, lest he get himself fortified cities, and cause us trouble.”
But Abishai the son of Zeruiah came to his aid, and attacked the Philistine and killed him. Then David's men adjured him, “You shall no more go out with us to battle, lest you quench the lamp of Israel.”
and said, “Far be it from me before my God that I should do this. Shall I drink the lifeblood of these men? For at the risk of their lives they brought it.” Therefore he would not drink it. These things did the three mighty men.
Then David said to Ahimelech the Hittite, and to Joab's brother Abishai the son of Zeruiah, “Who will go down with me into the camp to Saul?” And Abishai said, “I will go down with you.”