What is the difference between Catholic and Protestant beliefs?

Catholics and Protestants both confess Jesus Christ as Lord and accept the Trinity, Scripture, Baptism, and the need for God’s grace. Their deepest differences concern how Christ’s revelation is handed on and how His saving work reaches us through the Church.

Authority and revelation. Most Protestants hold some form of sola Scriptura, meaning Scripture is the only infallible rule of faith. Catholic teaching holds that Scripture and Sacred Tradition form one deposit of faith entrusted to the Church. The bishops in communion with the pope serve this deposit through the Magisterium, which remains subject to the Word of God and faithfully interprets it (CCC 80-87). Scripture itself presents the Church as “the pillar and foundation of truth” and commands Christians to hold fast to apostolic traditions given orally or in writing (1 Tm 3:15; 2 Thes 2:15).

Salvation and justification. Catholics teach that salvation is entirely a gift of God’s grace, merited by Christ. No one can earn the initial grace of forgiveness (CCC 1996, 2010). We receive justification through faith and Baptism, then cooperate with grace through faith working in love (Gal 5:6; Jas 2:24). Many Protestants teach justification by faith alone and understand good works mainly as evidence that saving faith is genuine. Catholics agree that living faith bears fruit, but reject any account that separates saving faith from charity and obedience.

Sacraments and worship. The Catholic Church recognizes seven sacraments instituted by Christ: Baptism, Confirmation, the Eucharist, Penance, Anointing of the Sick, Holy Orders, and Matrimony (CCC 1113). Most Protestant communities recognize two ordinances, Baptism and the Lord’s Supper, though beliefs vary widely. Catholics confess that the Eucharist truly becomes Christ’s Body and Blood, while many Protestants understand Communion symbolically or as a spiritual presence (CCC 1374; Jn 6:53-56).

The Church and the saints. Catholics believe Christ founded one visible Church governed by the apostles and their successors, with Peter and his successors holding a unique pastoral office (Mt 16:18-19; CCC 880-882). Catholics also honor Mary and the saints and ask for their prayers, while worship belongs to God alone (CCC 956, 971). Most Protestants reject invocation of the saints and papal authority.

How Catholics view Protestants. Baptized Protestants are Christians and are joined to the Catholic Church in a real, though imperfect, communion. Their communities contain genuine elements of sanctification and truth (CCC 818-819). Catholics should discuss these differences honestly, pray for Christian unity, and treat Protestant neighbors with genuine charity.