Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
3:21universi autem Moabitae audientes quod ascendissent reges ut pugnarent adversum eos convocaverunt omnes qui accincti erant balteo desuper et steterunt in terminis
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.