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.
28. Then there passed by Midianites. Some think that Joseph was twice sold in the same place. For it is certain, since Median was the son of Abraham and Keturah, that his sons were distinct from the sons of Ishmael: and Moses has not thoughtlessly put down these different names.
We have here the execution of their plot against Joseph. 1. They stripped him, each striving to seize the envied coat of many colours, Gen 37:23. Thus, in imagination, they degraded him from the birthright, of which perhaps this was the badge, grieving him, affronting their father, and making themselves sport, while they insulted over him.
Commenting on Genesis 37:23-30
And Reuben returned unto the pit,.... It is very probable he had pretended to go somewhere on business, with an intention to take a circuit, and come to the pit and deliver his brother, and go home with him to his father.