Midianites: Buy Joseph and Sell Him to Potiphar
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Genesis 37:28, 36
So when the Midianite traders passed by, his brothers pulled Joseph out of the pit and sold him for twenty shekels of silver to the Ishmaelites, who took him to Egypt. / Meanwhile, the Midianites sold Joseph in Egypt to Potiphar, an officer of Pharaoh and captain of the guard.