"If any man eat of this bread, he shall live for ever; and the bread that I will give, is My flesh, for the life of the world. The Jews therefore strove among themselves, saying: How can this man give us His flesh to eat? Then Jesus said to them: Amen, amen I say unto you: Except you eat the flesh of the Son of man, and drink His blood, you shall not have life in you. He that eateth My Flesh, and drinketh My Blood, hath everlasting life: and I will raise him up in the last day." (John 6)
Sola Scriptura not see that their belief system contradicts the Bible, and that in this passage God does not speak cavalierly?
His allegories, or parables, are for instruction. This is NOT an allegory. This is a very POINTED, blunt, take it or live it literal commandment. He went out of His way to make this point.
If He wishes the redemption of humanity for all the rest of time, this giving of His Body and Blood is not a symbol, and it wasn't just for His time. Those that believe in the Most Blessed Sacrament are the true fundamentalists, and we stake our very souls on this basic belief, that Jesus is Truth Incarnate.
He cannot deceive, nor be deceived.
He redeems us all, in His Body, and His Blood.