The commander of the guards trusted Joseph with everything that was in the prison. This happened because the Lord was with Joseph. The Lord helped Joseph be successful in everything he did.
So Potiphar was very happy for Joseph. Potiphar allowed Joseph to work for him and help him to rule the house. Joseph was the ruler over everything Potiphar owned.
The servants seated Joseph at a table by himself. His brothers were at another table by themselves. And the Egyptians were at table by themselves. The Egyptians believed that it was wrong for them to eat with Hebrews.
If a person can be trusted with small things, then he can also be trusted with big things. If a person is dishonest in little things, then he will be dishonest in big things too.
The king said to the servant, ‘Fine! You are a good servant. I see that I can trust you with small things. So now I will let you rule over ten of my cities!’