But the LORD was with Joseph, and showed him mercy, and gave him favor in the sight of the keeper of the prison.

Wesley's Notes

39:21 But the Lord was with Joseph and shewed him mercy. God despiseth not his prisoners, Psa 69:33. No gates nor bars can shut out his gracious presence from his people. God gave him favour in the sight of the keeper of the prison - God can raise up friends for his people even where they little expect them. The keeper saw that God was with him, and that every thing prospered under his hand, and therefore intrusted him with the management of the affairs of the prison.

King James Translators' Notes

shewed...: Heb. extended kindness unto him

Jamieson-Fausset-Brown Bible Commentary

21-23. The Lord . gave him favour in the sight of the keeper of the prison, &c.-It is highly probable, from the situation of this prison (Ge 40:3), that the keeper might have been previously acquainted with Joseph and have had access to know his innocence of the crime laid to his charge, as well as with all the high integrity of his character. That may partly account for his showing so much kindness and confidence to his prisoner. But there was a higher influence at work; for "the Lord was with Joseph, and that which he did, the Lord made it to prosper."

Matthew Henry's Concise Commentary

39:19-23 Joseph's master believed the accusation. Potiphar, it is likely, chose that prison, because it was the worst; but God designed to open the way to Joseph's honour. Joseph was owned and righted by his God. He was away from all his friends and relations; he had none to help or comfort him; but the Lord was with Joseph, and showed him mercy. Those that have a good conscience in a prison, have a good God there. God gave him favour in the sight of the keeper of the prison; he trusted him to manage the affairs of the prison. A good man will do good wherever he is, and will be a blessing even in bonds and banishment. Let us not forget, through Joseph, to look unto Jesus, who suffered being tempted, yet without sin; who was slandered, and persecuted, and imprisoned, but without cause; who by the cross ascended to the throne. May we be enabled to follow the same path in submitting and in suffering, to the same place of glory.

Matthew Henry's Whole Bible Commentary

Verses 19-23

Here is, 1. Joseph wronged by his master. He believed the accusation, and either Joseph durst not make his defence by telling the truth, as it would reflect too much upon his mistress, or his master would not hear it, or would not believe it, and there is no remedy, he is condemned to perpetual imprisonment, v. 19, 20. God restrained his wrath, else he had put him to death; and that wrath which imprisoned him God made to turn to his praise, in order to which Providence so disposed that he should be shut up among the king's prisoners, the state-prisoners. Potiphar, it is likely, chose that prison because it was the worst; for there the iron entered into the soul (Ps. 105:18), but God designed to pave the way to his enlargement. He was committed to the king's prison, that he might thence be preferred to the king's person. Note, Many an action of false imprisonment will, in the great day, be found to lie against the enemies and persecutors of God's people. Our Lord Jesus, like Joseph here, was bound, and numbered with the transgressors. 2. Joseph owned and righted by his God, who is, and will be, the just and powerful patron of oppressed innocence. Joseph was at a distance from all his friends and relations, had not them with him to comfort him, or to minister to him, or to mediate for him; but the Lord was with Joseph, and showed him mercy, v. 21. Note, (1.) God despises not his prisoners, Ps. 69:33. No gates nor bars can shut out his gracious presence from his people; for he has promised that he will never leave them. (2.) Those that have a good conscience in a prison have a good God there. Integrity and uprightness qualify us for the divine favour, wherever we are. Joseph is not long a prisoner before he becomes a little ruler even in the prison, which is to be attributed, under God, [1.] To the keeper's favour. God gave him favour in the sight of the keeper of the prison. Note, God can raise up friends for his people even where they little expect to find them, and can make them to be pitied even of those that carry them captive, Ps. 106:46. [2.] To Joseph's fitness for business. The keeper saw that God was with him, and that every thing prospered under his hand; and therefore entrusted him with the management of the affairs of the prison, v. 22, 23. Note, Wisdom and virtue will shine in the narrowest spheres. A good man will do good wherever he is, and will be a blessing even in bonds and banishment; for the Spirit of the Lord is not bound nor banished, witness St. Paul, Phil. 1:12, 13.