Leviticus 22:10
Only a member of a priestly family may eat any of the sacred offerings. No one else may eat them, not even someone staying with a priest or hired by him.
1 Samuel 21:6
The priest gave him holy bread. For he only had the bread of the presence that had been taken from Jehovah's presence and replaced with warm bread that day.
Matthew 12:4
He entered into the house of God, and he and his companions ate the showbread (holy bread), which it was not lawful for them to eat. It was only lawful for the priests.
Exodus 29:33
They shall eat those things used for their atonement and their ordination and consecration. A layman shall not eat them, because they are holy.