First Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
Chapter 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.