Genesis 39:3

And Joseph was brought down to Egypt; and Potiphar, an officer of Pharaoh, captain of the guard, an Egyptian, bought him of the hands of the Ishmeelites, which had brought him down thither.

And the LORD was with Joseph, and he was a prosperous man; and he was in the house of his master the Egyptian.

And Joseph found grace in his sight, and he served him: and he made him overseer over his house, and all that he had he put into his hand.

And it came to pass from the time that he had made him overseer in his house, and over all that he had, that the LORD blessed the Egyptian's house for Joseph's sake; and the blessing of the LORD was upon all that he had in the house, and in the field.