Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
13:12ergo in exercitu nostro dux Deus est et sacerdotes eius qui clangunt tubis et resonant contra vos filii Israhel nolite pugnare contra Dominum Deum patrum vestrorum quia non vobis expedit
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.