'Priests' in the Bible

Only the land of the priests he did not buy, for [there was] an allotment for the priests from Pharaoh, and they {lived on} the allotment that Pharaoh gave to them. Therefore they did not sell their land.

So Joseph made it a statute unto this day concerning the land of Egypt: one fifth to Pharaoh. Only the land of the priests alone did not belong to Pharaoh.