Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
14:6filios autem eorum qui occiderant non occidit iuxta quod scriptum est in libro legis Mosi sicut praecepit Dominus dicens non morientur patres pro filiis neque filii morientur pro patribus sed unusquisque in peccato suo morietur
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.