Additionally, although he was not under a divine law code (the Law of Moses was yet to come), Joseph had a clear grasp of moral principles; he knew that committing fornication with Potiphar’s infatuated wife would be a sin not only against her husband but also against God. ​ — Genesis 39: 8, 9.
Kuigi tema ajal Jumala seadusekogu ei kehtinud (Moosese Seadus tuli hiljem), oli tal ka selge arusaam moraalipõhimõtetest; ta teadis, et hooramine Pootifari sõgedalt armunud naisega ei oleks patt mitte ainult selle abikaasa, vaid ka Jumala vastu.