"And Melchisedec king of Salem brought forth loaves and wine, and he was the priest of the most high God. And he blessed Abram, and said, Blessed be Abram of the most high God, who made heaven and earth, and blessed be the most high God who delivered thine enemies into thy power. And Abram gave him the tithe of all."

(Genesis 14:18-20, Brenton LXX)

"And it came to pass in the year in which king Ozias died, that I saw the Lord sitting on a high and exalted throne, and the house was full of his glory. And seraphs stood round about him: each one had six wings: and with two they covered their face, and with two they covered their feet, and with two they flew. And one cried to the other, and they said, Holy, holy, holy is the Lord of hosts: the whole earth is full of his glory. And the lintel shook at the voice they uttered, and the house was filled with smoke. And I said, Woe is me, for I am pricked to the heart; for being a man, and having unclean lips, I dwell in the midst of a people having unclean lips; and I have seen with mine eyes the King, the Lord of hosts. And there was sent to me one of the seraphs, and he had in his hand a coal, which he had taken off the altar with the tongs: and he touched my mouth, and said, Behold, this has touched thy lips, and will take away thine iniquities, and will purge off thy sins."

(Isaiah 6:1-6, Brenton LXX)

"And as they were eating, Jesus took bread, blessed and broke it, and gave it to the disciples and said, 'Take, eat; this is My body.' Then He took the cup, and gave thanks, and gave it to them, saying, 'Drink from it, all of you. For this is My blood of the new covenant, which is shed for many for the remission of sins.'"

(Matthew 26:26-28, NKJV)

"'This is the bread which comes down from heaven, that one may eat of it and not die. I am the living bread which came down from heaven. If anyone eats of this bread, he will live forever; and the bread that I shall give is My flesh, which I shall give for the life of the world.' The Jews therefore quarreled among themselves, saying, 'How can this Man give us His flesh to eat?' Then Jesus said to them, 'Most assuredly, I say to you, unless you eat the flesh of the Son of Man and drink His blood, you have no life in you. Whoever eats My flesh and drinks My blood has eternal life, and I will raise him up at the last day. For My flesh is food indeed, and My blood is drink indeed. He who eats My flesh and drinks My blood abides in Me, and I in him. As the living Father sent Me, and I live because of the Father, so he who feeds on Me will live because of Me. This is the bread which came down from heaven—not as your fathers ate the manna, and are dead. He who eats this bread will live forever.'"

(John 6:50-58, NKJV)

"The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ? For we, though many, are one bread and one body; for we all partake of that one bread."

(1 Corinthians 10:16-17, NKJV)

"For I received from the Lord that which I also delivered to you: that the Lord Jesus on the same night in which He was betrayed took bread; and when He had given thanks, He broke it and said, 'Take, eat; this is My body which is broken for you; do this in remembrance of Me.' In the same manner He also took the cup after supper, saying, 'This cup is the new covenant in My blood. This do, as often as you drink it, in remembrance of Me.' For as often as you eat this bread and drink this cup, you proclaim the Lord’s death till He comes. Therefore whoever eats this bread or drinks this cup of the Lord in an unworthy manner will be guilty of the body and blood of the Lord. But let a man examine himself, and so let him eat of the bread and drink of the cup. For he who eats and drinks in an unworthy manner eats and drinks judgment to himself, not discerning the Lord’s body. For this reason many are weak and sick among you, and many [are dead]."

(1 Corinthians 11:23-30, NKJV)