Bible Verses About lord supper

Verily, verily, I say unto you, He that believeth on me hath everlasting life.

This is the bread which cometh down from heaven, that a man may eat thereof, and not die.

I speak as to wise men; judge ye what I say.

Wherefore whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.