en_obs-tn/content/08/05.md

tried to sleep with Joseph

Another way to say this would be, "tried to seduce Joseph to have sex with her." To "sleep with" is a way of expressing this in order not to be crude or offensive.

sin against God

It is against God's law for people to have sex if they are not married to each other. Joseph did not want to sin by disobeying God's law.

remained faithful to God

Another way to say this would be, "continued to obey God."