Third Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
9:4tu quoque si ambulaveris coram me sicut ambulavit pater tuus in simplicitate cordis et in aequitate et feceris omnia quae praecepi tibi et legitima mea et iudicia mea servaveris
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.