Genesis 47:22

Only the land of the priests he did not buy , for the priests had a fixed allowance from Pharaoh and lived on the allowance that Pharaoh gave them; therefore they did not sell their land .

However, he did not buy the land of the priests, because they received a regular allotment from Pharaoh and had food enough from the allotment Pharaoh gave them. That is why they did not sell their land.

Only the land of the priests bought he not; for the priests had a portion assigned them of Pharaoh, and did eat their portion which Pharaoh gave them: wherefore they sold not their lands.