His prayer was heard. Potiphar convinced himself that God was with Joseph. Sometimes he would make a test of Joseph's miraculous powers. If he brought him a glass of hippocras, he would say, "I would rather have wine mixed with absinthe," and straightway the spiced wine was changed into bitter wine.
Whatever he desired, he could be sure to get from Joseph, and he saw clearly that God fulfilled the wishes of his slave. Therefore he put all the keys of his house into his hand, and he knew not aught that was with him, keeping back nothing from Joseph but his wife. Seeing that the Shekinah rested upon him, Potiphar treated Joseph not as a slave, but as a member of his family, for he said, "This youth is not cut out for a slave's work, he is worthy of a prince's place." Accordingly, he provided instruction for him in the arts, and ordered him to have better fare than the other slaves.