Third Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
2:15tu inquit nosti quia meum erat regnum et me proposuerat omnis Israhel sibi in regem sed translatum est regnum et factum est fratris mei a Domino enim constitutum est ei
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.