Theology & Doctrine · FaithLogic

The Eucharist — Christ's Body and Blood

The church's central act of worship, instituted by Jesus at the Last Supper: bread and wine received as his body and blood. Christians agree it is commanded and central; they divide sharply over how Christ is present, whether it is a sacrifice, and what it does.

In brief

The institution. Matthew 26:26–29; Mark 14:22–25; Luke 22:14–20; and Paul, quoting a tradition he “received from the Lord,” in 1 Corinthians 11:23–26.

Paul's theology of it. 1 Corinthians 10:16 — “the cup … is it not a participation (koinonia) in the blood of Christ? The bread … a participation in the body?” And a stern warning: whoever eats “without discerning the body” eats “judgment on himself” and some “have died” (11:27–30).

John 6. “Unless you eat the flesh of the Son of Man and drink his blood, you have no life in you … my flesh is true food” (6:53–55). Whether this passage refers to the Eucharist, to believing in the crucified Christ, or to both, is itself part of the debate.

The Old Testament background. Passover (the lamb whose blood saves, eaten by the household), the blood of the covenant sprinkled at Sinai (Exodus 24), the manna “bread from heaven,” and the fellowship offerings eaten “before the LORD.”

The positions: transubstantiation (Catholic), sacramental union / “real presence” without a change of substance (Lutheran), spiritual real presence received by faith through the Spirit (Reformed), and memorialism (Zwingli, and much of the free-church world).

Synthesis

FAITHLOGIC ANALYSIS. On the New Testament and the early witness, three things are hard to deny: the Supper is commanded and central; Paul treats it as a real participation (koinōnia) in Christ's body and blood, with real consequences for eating it wrongly; and every Christian writer of the first three centuries speaks of it in realist terms — no defence of a purely symbolic view survives from that period. A flat memorialism has to set aside 1 Corinthians 10–11 and stand against the unanimous early church.

Beyond that, the traditions genuinely diverge, and the divergence is mostly about mechanism and sacrifice, not about whether Christ is given. Transubstantiation says more than the sources plainly say; memorialism says less than they plainly say; the Lutheran and Reformed accounts are serious attempts to hold the words and the ascension together. Where the evidence is contested, this page says so — and the honest summary is that the New Testament requires more than a symbol and does not, by itself, settle which of the higher accounts is right.

Part of the FaithLogic Theology & Doctrine library. Open the full study for the original languages, the early witnesses, the councils, and the arguments.