Not only was this action forbidden by the master, it was wrong in the sight of God. A clear sense of right and wrong is one of the best defenses against temptation. Joseph did not have to think about it. He knew what was wrong, and he was not going to violate his conscience.
Discussion: Why is it helpful for us to see all sin as a sin against God, rather than just the breaking of the rules or a sin against someone else?
Source: Biblical Family Values, Adult Teacher's Insights, page 18.