Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
33:8et movere non faciam pedem Israhel de terra quam tradidi patribus eorum ita dumtaxat si custodierint facere quae praecepi eis cunctamque legem et caerimonias atque iudicia per manum Mosi
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.