Potiphar himself was convinced of Joseph's innocence, and when he cast him into prison, he said to him, "I know that thou art not guilty of so vile a crime, but I must put thee in durance, lest a taint cling to my children."
By way of punishment for having traduced his ten brethren before his father, Joseph had to languish for ten years in the prison to which the wiles of traducers had in turn condemned him. But, on the other hand, as he had sanctified the Name of God before the world by his chastity and his steadfastness, he was rewarded. The letter He, which occurs twice in the Name of God, was added to his name. He had been called Joseph, but now he was called also Jehoseph.