Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
11:6tertia pars vestrum introeat sabbato et observet excubitum domus regis tertia autem pars sit ad portam Sir et tertia pars ad portam quae est post habitaculum scutariorum et custodietis excubitum domus Messa
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.