First Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
5:1filii quoque Ruben primogeniti Israhel ipse quippe fuit primogenitus eius sed cum violasset torum patris sui data sunt primogenita eius filiis Ioseph filii Israhel et non est ille reputatus in primogenitum
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.