Psalm 106:16
In the camp certain men became envious of Moses. They also became envious of Aaron, Jehovah's holy one.
Exodus 28:36
Also make a plate of pure gold and engrave on it, like the engravings of a seal: Holy to Jehovah.
Leviticus 21:6-8
Be God's holy men. Do not dishonor the name of your God. Be holy because you bring sacrifices by fire to Jehovah. It is the food (bread) of your God.
Leviticus 21:10-12
The priest who is anointed with oil and wears the chief priest's clothes is chief over his brothers. He must never mourn by leaving his hair uncombed or by tearing his clothes.
Numbers 16:1-50
Korah son of Izhar, Dathan and Abiram sons of Eliab, and On son of Peleth dared to challenge Moses. Korah was a descendant of Kohath and Levi. Dathan, Abiram, and On were descendants of Reuben.