“Those who have become acquainted with the secondary (i.e., under Christ) constitutions of' the apostles, are aware that the Lord instituted a new oblation in the new covenant, according to [the declaration of] Malachi the prophet. For, “from the rising of the sun even to the setting my name has been glorified among the Gentiles, and in every place incense is offered to my name, and a pure sacrifice” as John also declares in the Apocalypse: “The incense is the prayers of the saints.” Then again, Paul exhorts us “to present our bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.” And again, “Let us offer the sacrifice of praise, that is, the fruit of the lips.” Now those oblations are not according to the law, the handwriting of which the Lord took away from the midst by cancelling it; but they are according to the Spirit, for we must worship God “in spirit and in truth.” And therefore the oblation of the Eucharist is not a carnal one, but a spiritual; and in this respect it is pure. For we make an oblation to God of the bread and the cup of blessing, giving Him thanks in that He has commanded the earth to bring forth these fruits for our nourishment. And then, when we have perfected the oblation, we invoke the Holy Spirit, that He may exhibit this sacrifice, both the bread the body of Christ, and the cup the blood of Christ, in order that the receivers of these antitypes may obtain remission of sins and life eternal. Those persons, then, who perform these oblations in remembrance of the Lord, do not fall in with Jewish views, but, performing the service after a spiritual manner, they shall be called sons of wisdom.” -Irenaeus, Fragments of the Lost Writings of Irenaeus, Fragment XXXVII
“Elsewhere the Lord, in the Gospel according to John, brought this out by symbols, when He said: “Eat ye my flesh, and drink my blood;” describing distinctly by metaphor the drinkable properties of faith and the promise, by means of which the Church, like a human being consisting of many members, is refreshed and grows, is welded together and compacted of both,-of faith, which is the body, and of hope, which is the soul; as also the Lord of flesh and blood. For in reality the blood of faith is hope, in which faith is held as by a vital principle...Thus in many ways the Word is figuratively described, as meat, and flesh, and food, and bread, and blood, and milk. The Lord is all these, to give enjoyment to us who have believed on Him. Let no one then think it strange, when we say that the Lord's blood is figuratively represented as milk. For is it not figuratively represented as wine? “Who washes,” it is said, “His garment in wine, His robe in the blood of the grape.” In His Own Spirit He says He will deck the body of the Word; as certainly by His own Spirit He will nourish those who hunger for the Word.” -Clement of Alexandria, The Instructor 1.6
Origen also seems to have it right.
“For so did God in your own gospel even reveal the sense, when He called His body bread; so that, for the time to come, you may understand that He has given to His body the figure of bread, whose body the prophet of old figuratively turned into bread, the Lord Himself designing to give by and by an interpretation of the mystery.” -Tertullian, Against Marcion 3.19
John 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
Ezek 3:1 Moreover he said unto me, Son of man, eat that thou findest; eat this scroll, and go speak unto the house of Israel. 2 So I opened my mouth, and he caused me to eat that scroll. 3 And he said unto me, Son of man, cause thy belly to eat, and fill thy bowels with this roll that I give thee. Then did I eat it; and it was in my mouth as honey for sweetness.
Jer 15:16 Thy words were found, and I did eat them; and thy word was unto me the joy and rejoicing of mine heart: for I am called by thy name, O LORD God of hosts.
1 Corinthians 10:3 And did all eat the same spiritual meat; 4 And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ.