2 Samuel 20:25King James Version

Genesis 47:22

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.

Genesis 47:26

And Joseph made it a law over the land of Egypt unto this day, that Pharaoh should have the fifth part; except the land of the priests only, which became not Pharaoh’s.

Exodus 19:6

And ye shall be unto me a kingdom of priests, and an holy nation. These are the words which thou shalt speak unto the children of Israel.

Exodus 19:22

And let the priests also, which come near to the LORD, sanctify themselves, lest the LORD break forth upon them.

Exodus 19:24

And the LORD said unto him, Away, get thee down, and thou shalt come up, thou, and Aaron with thee: but let not the priests and the people break through to come up unto the LORD, lest he break forth upon them.