Genesis 39:21

21. But the Lord was with Joseph. It appears, from the testimony of the Psalmist just cited, that Joseph’s extreme sufferings were not immediately alleviated. The Lord purposely suffered him to be reduced to extremity, that he might bring him back as from the grave. We know that as the light of the sun is most clearly seen when we are looking from a dark place; so, in the darkness of our miseries, the grace of God shines more brightly when, beyond expectation, he succors us. Moreover, Moses says, the Lord was with Joseph, because he extended this grace or mercy towards him; whence we may learn, that God, even when he delivers us from unjust violence, or when he assists us in a good cause, is yet induced to do so by his own goodness. For since we are unworthy that he should grant us his help, the cause of its communication must be in himself; seeing that he is merciful. Certainly if merits, which should lay God under obligation, are to be sought for in men, they would have been found in Joseph; yet Moses declares that he was assisted by the gratuitous favor of God. This, however, is no obstacle to his leaving received the reward of his piety, which is perfectly consistent with the gratuitous kindness of God. The manner of exercising this kindness is also added; namely, that the Lord gave him favor with the keeper of the prison. There is, indeed, no doubt that Joseph was acceptable to the keeper for many reasons: for even virtue conciliates favor to itself; and Moses has before shown that the holy man was amiable in many ways; but because it often happens that the children of God are treated with as great inhumanity as if they were the worst of all men, Moses expressly states that the keeper of the prison, at length, became humane; because his mind, which was not spontaneously disposed to equity, had been divinely inclined to it. Therefore, that the keeper of the prison, having laid aside his cruelty, acted with kindness and gentleness, was a change which proceeded from God, who governs the hearts of men according to his own will. But it is a wonder that the keeper of the prison did not fear lest he should incur the displeasure of Potiphar: and even that Potiphar himself, who without difficulty could have interfered, should yet have suffered a man whom he mortally hated to be thus kindly and liberally treated. It may be answered with truth, that his cruelty had been divinely restrained: but it is also probable that he had suspected, and at length, been made acquainted with the subtle scheme of his wife. Although, however, he might be appeased towards holy Joseph, he was unwilling to acquit him to his own dishonor. Meanwhile the remarkable integrity of Joseph manifests itself in this, that when he is made the guard of the prison, and has the free administration of it, he nevertheless does not attempt to escape, but waits for the proper season of his liberation.