Psalm 106:16

They were full of envy against Moses among the tents, and against Aaron, the holy one of the Lord.

Exodus 28:36

You are to make a plate of the best gold, cutting on it, as on a stamp, these words: HOLY TO THE LORD.

Leviticus 21:6-8

Let them be holy to their God and not make the name of their God common; for the fire offerings of the Lord and the bread of their God are offered by them, and they are to be holy.

Leviticus 21:10-12

And he who is the chief priest among his brothers, on whose head the holy oil has been put, who is marked out to put on the holy robes, may not let his hair go loose or have his clothing out of order as a sign of sorrow.

Numbers 16:1-50

Now Korah, the son of Izhar, the son of Kohath, the son of Levi, with Dathan and Abiram, the sons of Eliab, and On, the son of Pallu, the son of Reuben, made themselves ready,

Treasury of Scripture Knowledge

Summary

They envied Moses also in the camp, and Aaron the saint of the LORD.

Bible References

The saint

Exodus 28:36
You are to make a plate of the best gold, cutting on it, as on a stamp, these words: HOLY TO THE LORD.
Leviticus 21:6
Let them be holy to their God and not make the name of their God common; for the fire offerings of the Lord and the bread of their God are offered by them, and they are to be holy.
Numbers 16:7
And put spices on the fire in them before the Lord tomorrow; then the man marked out by the Lord will be holy: you take overmuch on yourselves, you sons of Levi.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain