Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
Chapter 30
8nolite indurare cervices vestras sicut patres vestri tradite manus Domino et venite ad sanctuarium eius quod sanctificavit in aeternum servite Domino Deo patrum vestrorum et avertetur a vobis ira furoris eius
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.