1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
26:15And David said to Abner, Art not thou a valiant man? and who is like to thee in Israel? wherefore then hast thou not kept thy lord the king? for there came one of the people in to destroy the king thy lord.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.