Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
21:4So Joram rose up over the kingdom of his father: and when he had established himself, he slew all his brethren with the sword, and some of the princes of Israel.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.