And Joseph's master took him, and put him into the prison, a place where the king's prisoners were bound: and he was there in the prison.
All Commentaries on Genesis 39:20 Go To Genesis 39
Caesarius of Arles
Now when Joseph was accused by his mistress, he refused to say that she was guilty, because as a just man he did not know how to accuse anyone; for this reason the unchaste woman acted with impunity. Therefore I might say that she was truly stripped even though she held the skirt of his garment in her hand, for she had lost all the adornments of purity and the covering of chastity. I might say further that he was sufficiently adorned and clothed even though his voice was not heard, for his innocence spoke. In this way, Susanna later spoke better than the prophet even though she was silent at her trial; since she did not seek the help of her own voice she thus merited the defense of the prophet. I might have said Joseph was more blessed when he was cast into prison, for he endured martyrdom in defense of chastity. The gift of purity is a great thing, even when it is preserved without danger, but when it is defended, although at the risk of personal safety, then it is crowned still more fully.