What does Genesis 47:15 mean?
When a resource is scarce, it becomes more valuable. The more important the resource is, the more power it bestows. During a famine, those with food become the most powerful of all. Joseph, under the blessing of God, made Pharaoh very powerful and wealthy, indeed.Pharaoh had empowered Joseph to store away enough grain before the famine to provide food for all the people in the land during the seven years of barren lands (Genesis 41:39–44). Joseph collected surplus grain through taxes (Genesis 41:34) as Pharaoh's representative. When hard times came, though, he did not give the food back for free. Instead, he sold it to the people for the first two to three years of the seven-year famine (Genesis 41:55–57). In fact, as the famine wore on, the people of Egypt and Canaan exchanged all their wealth for food (Genesis 47:13–14). Pharaoh now had all the money in the region.
As the people continued coming to Joseph looking for more food, they had no coins or other money to offer. Yet they came, both Egyptians and Canaanites, in desperation, demanding food they could not pay for. "Why should we die before your eyes?" they said. Joseph's answer reveals that he was ready for that question (Genesis 47:16).