Transubstantiation and the Eucharist

Key Concept: Transubstantiation

• Definition: Transubstantiation means "change of substance," different from transformation which implies a change in outward appearance.
• Application to Mass: During Mass, the substance of bread and wine changes into the body and blood of Christ, though their appearance remains the same.
• Analogy: Like a man becoming a father—he looks the same but is fundamentally different.

Meaning of Communion

• Not a Reenactment: Communion is not just a reenactment of the Last Supper, but a re-encounter with Christ's sacrifice on the Cross.
• Christ's Gift: In the Eucharist, Christ gives us his body and blood as sacrifice for the forgiveness of sins.
• Living Memory: Celebrating Mass makes past events of Christ's sacrifice present and real.

Sacrifice in the Eucharist

• Once-for-All Sacrifice: The Eucharist re-experiences Christ’s once-for-all-time sacrifice.
• Call to Sacrifice: Sharing in Christ's presence calls believers to make sacrifices in love for one another.

Bread and Wine in Eucharist

• Requirements: Unleavened bread made of wheat and wine from grapes are necessary for validity.
• Allergies and Intolerances: Options like low-gluten hosts or receiving from the cup only can accommodate needs.
• Full Presence: Christ is present in both bread and wine; receiving one is sufficient.

Receiving Communion and Sin

• Sin Considerations: Not all sins prevent one from receiving Communion.
  • Mortal Sins: Separate a person from God and require reconciliation before receiving Communion.
  • Venial Sins: Lesser sins are absolved by asking God for forgiveness.

Non-Catholic Participation

• Communion Restrictions: Non-Catholics typically cannot receive Communion as it signifies unity in faith and church structure.
• Unity Goals: The Church prays for greater unity to share communion together.

Importance of the Eucharist

• Role in Christian Life: The Eucharist is considered the "source and summit" of Christian life.
• Spiritual Good: It contains Christ himself, aligning all ministry and outreach with it.