Genesis 40:3

“And he put them in ward in the house of the captain of the guard, etc.] Who is generally thought to be Potiphar, since this was the office he was in, (<013901>Genesis 39:1); unless he was dead, and there was another put into his room, or there were more than one in the same office: into the prison, the place where Joseph [was] bound; that is, where he had been bound, and where he was still a prisoner, though not fettered and in that close confinement he had been in.”

“Pharaoh put them in ward, &c.--Whatever was their crime, they were committed, until their case could be investigated, to the custody of the captain of the guard, that is, Potiphar, in an outer part of whose house the royal prison was situated.”

“- Joseph in Prison An uncomplaining patience and an unhesitating hopefulness keep the breast of Joseph in calm tranquillity. There is a God above, and that God is with him. His soul swerves not from this feeling. Meanwhile, new and distinguished prisoners are introduced into his place of confinement. Genesis 40:1-4 The chief butler and chief baker, high officials in Pharaoh’s court, come under the displeasure of their sovereign. “In the house of the captain of the guards.” It appears that this officer’s establishment contained the keep in which Joseph and these criminals were confined. “Charged Joseph with them.” As Joseph was his slave, and these were state prisoners, he appointed him to…”