1 Kings (Author Compiled by Isaiah and Jeremiah from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
20:42And he said to him, Thus saith Jehovah: Because thou hast let go out of thy hand the man that I had devoted to destruction, thy life shall be for his life, and thy people for his people.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.