1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
17:55And when Saul saw David go forth against the Philistine, he said unto Abner, the captain of the host, Abner, whose son is this youth? And Abner said, As thy soul liveth, O king, I cannot tell.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.