Genesis 39:4-6

39:4 So Joseph found favor in his sight and became his personal attendant. Potiphar appointed Joseph overseer of his household and put him in charge of everything he owned. 39:5 From the time Potiphar appointed him over his household and over all that he owned, the Lord blessed the Egyptian’s household for Joseph’s sake. The blessing of the Lord was on everything that he had, both in his house and in his fields. 39:6 So Potiphar left everything he had in Joseph’s care; he gave no thought to anything except the food he ate.

Now Joseph was well built and good-looking.

Genesis 39:9

39:9 There is no one greater in this household than I am. He has withheld nothing from me except you because you are his wife. So how could I do such a great evil and sin against God?”