2 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
21:17And Abishai the son of Zeruiah succoured him, and smote the Philistine and killed him. Then the men of David swore to him, saying, Thou shalt go no more out with us to battle, that thou quench not the lamp of Israel.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.