Third Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
20:13et ecce propheta unus accedens ad Ahab regem Israhel ait haec dicit Dominus certe vidisti omnem multitudinem hanc nimiam ecce ego tradam eam in manu tua hodie ut scias quia ego sum Dominus
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.