First Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
6:32et ministrabant coram tabernaculo testimonii canentes donec aedificaret Salomon domum Domini in Hierusalem stabant autem iuxta ordinem suum in ministerio
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.