Consider This...

No one here has more authority than I do. He has held back nothing from me except you, because you are his wife. How could I do such a wicked thing? It would be a great sin against God." She kept putting pressure on Joseph day after day, but he refused to sleep with her, and he kept out of her way as much as possible. (Genesis 39:9, 10 NLT)

Isn't it refreshing to read about a man that placed fidelity to God above his own sensual pleasures. Joseph could have yielded to this evil, but he resisted the temptation declaring His allegiance to God and not his base nature. He didn't just see committing immorality as a sin against Potiphar or his wife. He saw it as "a great sin against God" and a test of His devotion to Him!