And it came to pass after these things that the butler of the king of Egypt and his baker had offended their lord, the king of Egypt. Joseph was in prison a number of years, since he was only seventeen at the time of his involuntary trip to Egypt and thirty at the time of his release. But while he was still a prisoner, although one with unusual privileges, the chief butler and the chief baker of Pharaoh were cast into the state prison for some offense against the king.
Related Commentaries of Genesis 40:1
Genesis 40:1
1 And it came to pass after these things, that the butler of the king of Egypt and his baker had offended their lord the king of Egypt.