First Book of Kings (Author Compiled by Isaias from records of Samuel, David, Nathan, and Gad.)
18:25dixit autem Saul sic loquimini ad David non habet necesse rex sponsalia nisi tantum centum praeputia Philisthinorum ut fiat ultio de inimicis regis porro Saul cogitabat tradere David in manibus Philisthinorum
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.