What does Genesis 41:21 mean?
Pharaoh is describing the first of his two disturbing dreams (Genesis 41:1–7). He dreamt that he was standing on the bank of the Nile River when seven healthy, fat, good-looking cows came out of the river. As they began to feed along the bank, seven ugly, skinny cows came out of the river and devoured the seven healthy cows (Genesis 41:17–20).Now Pharaoh adds a detail not included in the description of his dreams at the start of this chapter. After the ugly, skinny cows had eaten the healthy, fat ones, they remained ugly and skinny. Eating the healthy cows didn't appear to fatten them up in any way. Their starving, skeletal condition was so severe that even eating other cows made no difference.
These explanations are being given to Joseph, summoned from prison for his ability to interpret dreams (Genesis 41:8–16). Pharaoh will continue to describe his second dream (Genesis 41:22–24).