And then on the institution of the Eucharist:
Matt. 26:26‑28
Mark 14:22‑24
Luke -22: 1920
I Corinthians 11: 23‑25
And then a warning on receiving the Eucharist unworthily (which would be meaningless if it were only symbolic):
1 Corinthians 11: 26‑30
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For as often as ye eat this bread, and drink this cup, ye do shew the Lord’s death till he come. 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. But let a man examine himself, and so let him eat of that bread, and drink of that cup. For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord’s body. For this cause many are weak and sickly among you, and many sleep.