First Book of Kings (Author Compiled by Isaias from records of Samuel, David, Nathan, and Gad.)
26:21And Saul said: I have sinned; return, my son David, for I will no more do thee harm, because my life hath been precious in thy eyes this day: for it appeareth that I have done foolishly, and have been ignorant in very many things.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.