Theophylact of Bulgaria
"They sold him into Egypt." Though they knew no fault in their brother, they treated him so wickedly. They did this at the very time when he had come to them with food for them. By their act they assisted the prophecy without knowing it. Against their will they became the causes of his prosperity, though only after many trials for him. They brought upon themselves great fear and unbearable shame. Yet Joseph did not remember the wrong and plotted nothing terrible against them. On the contrary, he fed them when they were tormented by hunger and made them known to Pharaoh.