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. An officer of Pharaoh, captain of the guard - Mr. Ainsworth, supposing that his office merely consisted in having charge of the king's prisoners, calls Potiphar provost marshal! See Clarke on Genesis 37:36 (note), See Clarke on Genesis 40:3 (note).
Related Commentaries of Genesis 39:1
Genesis 39:1
1 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.