1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
26:8And Abishai said to David, God has delivered thine enemy into thy hand this day; and now let me smite him, I pray thee, with the spear, even to the ground once, and I will not do it the second time.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.