First Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
29:18Domine Deus Abraham et Isaac et Israhel patrum nostrorum custodi in aeternum hanc voluntatem cordis eorum et semper in venerationem tui mens ista permaneat
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.