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