TSK · Exodus 29:33

You must eat it in a holy place because it is your allotted portion and the allotted portion of your sons from the gifts of the LORD, for this is what I have been commanded.

“‘No lay person may eat anything holy. Neither a priest’s lodger nor a hired laborer may eat anything holy,

Whenever the tabernacle is to move, the Levites must take it down, and whenever the tabernacle is to be reassembled, the Levites must set it up. Any unauthorized person who approaches it must be killed.

But those who were to camp in front of the tabernacle on the east, in front of the tent of meeting, were Moses, Aaron, and his sons. They were responsible for the needs of the sanctuary and for the needs of the Israelites, but the unauthorized person who approached was to be put to death.

It was a memorial for the Israelites, that no outsider who is not a descendant of Aaron should approach to burn incense before the LORD, that he might not become like Korah and his company– just as the LORD had spoken by the authority of Moses.

But you and your sons with you are responsible for your priestly duties, for everything at the altar and within the curtain. And you must serve. I give you the priesthood as a gift for service, but the unauthorized person who approaches must be put to death.”

Jesus said to them,“I tell you the solemn truth, unless you eat the flesh of the Son of Man and drink his blood, you have no life in yourselves.

For every time you eat this bread and drink the cup, you proclaim the Lord’s death until he comes.