Transubstantiation: The Roman Catholic doctrine that the 'substance' of the bread and wine changes into the actual Body and Blood of Christ, while the 'accidents' (physical appearance, taste, smell) remain unchanged.
Consubstantiation: Often associated with Lutheranism, this view holds that the Body and Blood of Christ are present 'in, with, and under' the bread and wine, without the bread and wine losing their original substance.
Memorialism: A view common in many Reformed and Baptist traditions, suggesting that the Lord's Supper is a symbolic act of remembrance (a 'memorial') of Christ's sacrifice, rather than a literal physical presence.
Real Presence: A broader term used by various traditions (including Anglicans and Methodists) to affirm that Christ is truly present in the sacrament in a spiritual or mystical way that transcends mere symbolism.
Regeneration: The belief that Baptism is the means by which a person is 'born again' spiritually, receiving the forgiveness of original sin and the indwelling of the Holy Spirit.
Covenantal Sign: In many Reformed traditions, Baptism is seen as the New Testament equivalent of circumcision, marking the individual's entry into the covenant community of the Church.
Infant vs. Believer's Baptism: Paedobaptism (infant baptism) is practiced by Catholics, Orthodox, and many mainline Protestants based on the idea of God's prevenient grace, while Credobaptism (believer's baptism) is practiced by those who believe the rite should only follow a personal profession of faith.
| Feature | Catholic / Orthodox | Protestant (General) |
|---|---|---|
| Number | Seven Sacraments | Two (Baptism & Eucharist) |
| Efficacy | Ex Opere Operato (Effective by the act itself) | Dependent on faith of the recipient |
| Eucharist | Real Presence (Transubstantiation) | Varies (Consubstantiation to Memorialism) |
| Purpose | Essential means of receiving grace | Signs of grace or acts of obedience |
Ex Opere Operato: This principle asserts that the sacraments are effective by the very fact of the action being performed, provided the minister intends what the Church intends, regardless of the minister's personal holiness.
Sacrament vs. Ordinance: Many Protestant groups prefer the term 'ordinance' to emphasize that the rites are performed in obedience to a divine command (order) rather than as a mystical channel of grace.
Identify the 'Matter' and 'Form': When asked about a specific sacrament, always identify the physical element used and the words spoken; this is a common framework for descriptive questions.
Distinguish Presence Theories: Be prepared to compare Transubstantiation, Consubstantiation, and Memorialism. Use the 'Substance vs. Accident' distinction for Catholic views.
Check the Number: Remember the '2 vs 7' rule. If a question mentions 'Holy Orders' or 'Extreme Unction' (Anointing), it is referring to the broader sacramental system of the Catholic/Orthodox traditions.
Common Error: Do not confuse 'Sacrament' with 'Sacramental.' Sacramentals (like holy water or rosaries) are pious practices that do not confer the same level of grace as the seven sacraments.
