Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
21:9cumque transisset Ioram cum principibus suis et cuncto equitatu qui erat secum surrexit nocte et percussit Edom qui se circumdederat et omnes duces equitatus eius
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.