But Abishai son of Zeruiah came to his aid, struck the Philistine, and killed him. Then David’s men swore to him, “You must never again go out with us to battle, so that the lamp of Israel may not be extinguished.”
Jewish Publication Society of America Version (JPS1917) - 2 Samuel 21:17 >But Abishai the son of Zeruiah succoured him, and smote the Philistine, and killed him. Then the men of David swore unto him, saying: 'Thou shalt go no more out with us to battle, that thou quench not the lamp of Israel.'