Protestantism and Catholicism

As Christians, Protestants and Catholics share different beliefs. Learn 5

key differences.

Often you hear people say, “Christians believe X,” or “Christianity

says Y.” Or maybe you’ve heard something more specific, like,

“Catholics believe X, but Baptists believe Y, and Methodists believe Z.”

What does all that mean? Are there different kinds of Christians?

Different Strokes

There are many forms of Christianity, and though there are similarities

between them, there are also significant differences. Of the three main

divisions—Orthodox, Catholic, and Protestant—Protestantism, Roman

Catholicism, and the relationship between the two seem to get the most

attention in the West.

Cultural and geographical elements have played significant roles in the

development of Christianity, and as such, we should not discount ethnic

and cultural identities when comparing a Peruvian Catholic to an

American Protestant.1 But setting cultural factors aside for a moment,

let’s consider some of the fundamental differences between Protestantism

and Roman Catholicism.

Historical Background

In the centuries that followed Jesus’ death, most Christians promoted

what was called “Catholic Christianity”—what the ancient Apostles’

Creed (circa 150 CE) professed as the “one holy, catholic church.”2

The term “catholic” comes from the Greek word katholikē, which means

literally “according to the whole” or “universal.”The term came to

designate the most accepted form of faith passed down from the first

followers of Jesus. It was not about an institution: “it was a spiritual

vision, a conviction that all Christians should be in one body.”3

At that time, Roman culture and the Latin language dominated the West,

so Christianity in that region took on a decidedly Roman flavor.

Consequently, the term “Roman Catholicism” became synonymous with

western Christianity.4 From the early centuries CE through the Middle

Ages, Roman Catholic beliefs, traditions, practices, and institutions were

the normative form of Christianity.

In the sixteenth century, the Protestant Reformation began. Church

leaders Luther, Zwingli, Calvin, and others protested against some of the

practices and abuses of the Catholic Church.

Though the protestors wanted to reform the church from within,

eventually it became clear that their movement was incompatible with the

mother church in Rome. So they broke away and set up their own church

structures and organizations—ushering in the birth of Protestantism.

Today, many different denominations and groups make up Protestantism

throughout the world. Anglican, Lutheran, Presbyterian, Methodist,

Baptist, Evangelical Free, Pentecostal, and many nondenominational

churches now fall under the umbrella category of Protestantism.

Key Differences

Though individuals can, of course, have their own specific beliefs, there

are five key differences between Protestants and Catholics.

The Authority of the Pope

Roman Catholics believe that the pope is the head of the worldwide

Church. As the “vicar of Christ,” the pope stands as the earthly

representative of Christ in the world and acts in his place to lead the

Church in determining what is true, right, and proper for all Catholics.

According to church teaching, the pope is preserved from any possibility

of error when speaking on matters of faith and morals to be held by the

entire Church.5

According to this tradition, the apostle Peter was ordained the first

“pope”6 when Jesus declared, “And I tell you that you are Peter,and on

this rock I will build my church, and the gates of Hadeswill not overcome

it.”7 Tradition says that Peter went on to become the bishop of Rome.

Catholics believe that this office of authority continues today.

Protestants, on the other hand, do not believe in a hierarchical structure

that culminates in one individual who could speak definitively and

proclaim truth without error.8

Mary, the Mother of Jesus

Mary plays a different role for Catholics than for most

Protestants. Because Mary was the instrument through whom God

brought his Son into the world, Catholics honor Mary with the titles

“Mother of God” and “Mother of the Church.”

Catholics regard her as an example of faith and holiness. According to

tradition, Mary was conceived and born without the stain of original

sin and remained sinless throughout her life.

Though Catholics have a special devotion to Mary, they do not adore or

worship her as they do God and the Incarnate Word (a common

misperception). They pray to Mary—as they pray to other saints—asking

her to intercede or mediate for them with her Son with whom she is in

perfect communion. Put another way, they ask Mary to pray for them in

much the same way as all Christians ask each other for prayer.9

For various reasons, though Protestants may have a high view of Mary,

they do not hold her in the same regard. As such, they typically do not

pray to Mary or make her a focal point of artwork or iconography in the

same way Roman Catholics do.10

The Doctrine of Justification

Both Protestants and Catholics agree that one is justified—made

righteous or put in right relationship with God—through grace. The

differences in their beliefs are a matter of degree.

Roman Catholics believe that a person’s actions play a significant role in

one’s standing with God because actions are external expressions of one’s

inner faith. For Catholics, good deeds can achieve penance for sins or

limit one’s time in Purgatory after death.

Protestants believe that justification by grace through faith is the only

way for a person to enjoy a righteous standing before God. In this view,

good works are done out of gratitude and are seen as a result of faith, but

alone can earn no merit with God.11 Catholics believe this as well but

continue to emphasize works as demonstrations of faith.

Worship

Roman Catholics embrace mystery, hierarchy, rituals, liturgy, structure,

and more symbolic actions in worship. Protestants, on the other hand,

developed worship services that are plain and straightforward, focusing

on Scripture.

For Catholics, the focus of the Mass is the Eucharist or Holy Communion.

For Protestants, the central moment of worship comes with the

sermon—when the minister stands to preach from the Bible.12

Admittedly, the above is a generalization for the sake of clarity and

simplicity. Nevertheless, a typical evangelical Protestant worship service

today could consist almost entirely of singing modern songs with modern

instruments in an auditorium with few religious symbols. But a Catholic

service will likely contain numerous elements that are complex, elaborate,

and deeply meaningful to participants.

The Role of Church Tradition

Most variations between Protestants and Roman Catholics are grounded

in a more foundational difference: the role of church tradition.

Protestants believe that the central authority for faith and practice is

found in the Scriptures.13 While tradition, reason, and experience are

important, Protestants tend to think they should all be measured

against—and are ultimately superseded by—the teachings of the Bible.

On the other hand, Roman Catholics adhere to many beliefs and practices

that are not explicitly stated in the Scriptures. These traditions—along

with the Scriptures—constitute a deposit of faith that has been passed

down from the first apostles through the Magisterium of the Church—that

is, the Pope, the bishops, and the Church Councils.14 Authority is found in

the Bible, reason, and church tradition together—these three are seen as

complementary, not in tension.15

Thus, Roman Catholics regard certain practices and beliefs—such as

papal infallibility, Mary’s Immaculate Conception, the doctrine of

Purgatory, the celibacy of priests, and the distinction between mortal and

venial sins—as important to their faith, while Protestants do not

necessarily agree.

Many Denominations, One God

These differences are extremely important. They continue to be the

source of fruitful—and sometimes not-so-fruitful—discussions between

Protestants and Roman Catholics. However, one should not neglect the

central beliefs upon which virtually all Protestants and Catholics agree.

There is one God, the Creator, who sent his only Son, Jesus, into the

world to live as an example, to teach about the coming reign of God, to

die on the cross, and to rise from the dead. Through faith in Jesus, anyone

can find hope, peace, and restoration with God.16

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