--- title: "How does the Catholic Church relate to other Christians?" url: "https://seekabove.com/answers/relationship-with-other-christians" description: "The Catholic Church regards other baptized Christians not as enemies or strangers but as genuinely her brothers and sisters in Christ, joined to her by real if incomplete bonds. She believes the one…" published: "2026-06-05" updated: "2026-06-05" category: "The Church" scripture: ["John 17:20-23", "Ephesians 4:4-6", "1 Corinthians 1:10-13", "Romans 6:3-4", "Mark 9:38-40"] catechism: "CCC 816–822" --- # How does the Catholic Church relate to other Christians? ## Short answer The Catholic Church regards other baptized Christians not as enemies or strangers but as genuinely her brothers and sisters in Christ, joined to her by real if incomplete bonds. She believes the one Church Christ founded continues to exist ("subsists") in the Catholic Church, while at the same time recognizing that true elements of holiness and truth — Scripture, baptism, grace, faith in Christ — are really at work in other communities. The division between Christians is treated as a wound to be healed, and working toward unity is something the Church considers a duty, not an optional courtesy. ## Full explanation For much of history, the relationship between Catholics and other Christians was framed mostly in terms of who was right and who was outside. The modern Church, especially since the Second Vatican Council, speaks far more carefully, and the care matters. Two truths have to be held together, and dropping either one distorts the picture. The first truth is that the Church believes Christ established **one** Church, with a definite, visible reality — including the full set of means he gave for salvation: the complete faith, all the sacraments, and ministry in unbroken succession from the apostles. The Council used a precise word to say where that one Church of Christ continues to be found: it *subsists in* the Catholic Church. That phrasing is deliberate. It does not say the Church of Christ is simply a generic spiritual reality scattered evenly everywhere; it locates the fullness in a concrete communion. Catholics aren't being asked to pretend that all differences are trivial or that every group teaches the same thing. The second truth is that other Christians are not "outsiders." Through their faith in Christ and their valid baptism, they are truly made children of God and incorporated into Christ — which is why the Church honestly calls them brothers and sisters, not merely well-meaning rivals. Real instruments of grace operate among them: the Scriptures read with faith, lives of deep prayer and charity, the gifts of the Holy Spirit, and in many cases other sacraments. The Church teaches that the Spirit genuinely uses these communities as means of salvation, even as she holds that the fullness of the means entrusted to the Church is found in the Catholic communion. So the relationship is one of real but **imperfect** communion — a kinship that already exists and is meant to grow toward complete unity. It helps to picture a single large family that has, over centuries, suffered painful splits. The relatives who live apart are still family; the blood relationship is real, the shared inheritance is real, the love can be real. But something is genuinely broken, and pretending otherwise would not be love — it would be denial. The Church names the division as a contradiction of Christ's own prayer that his followers "may be one," and she insists that the sin of division usually can't be laid at the feet of today's Christians, who were born into it. Christians on every side are called to repentance, prayer, honest dialogue, and cooperation, so that the family can be reconciled in the truth. This is why ecumenism — the work of restoring Christian unity — is not, in the Catholic view, a vague hope or a diplomatic nicety. It flows from Jesus' own desire and from the recognition that the bonds between Christians are already real. At the same time, real unity is sought in *truth and charity together*, not by quietly setting truth aside. The goal is not that everyone agree to disagree forever, but that the one family Christ founded be visibly one again. ## Why this matters How a Catholic regards other Christians shapes everyday relationships — with a Protestant spouse, an Orthodox neighbor, a Baptist coworker. The Church's teaching rules out both contempt and indifference. You can recognize a fellow Christian as a true brother or sister, learn from their faith, and pray and work with them, while still believing the fullness of what Christ gave is found in the Catholic Church. It frees you to love without either pretending differences don't exist or treating those who differ as enemies. ## Common misunderstanding There are two opposite errors here. One says other Christians are simply lost or false believers with nothing of God among them — which contradicts the Church's clear teaching that real grace, faith, and holiness are at work in them. The other says all churches are basically interchangeable and the differences don't matter — which contradicts the equally clear teaching that Christ founded one Church and entrusted a definite fullness to it. The Catholic position refuses both: genuine kinship *and* a real, not-yet-healed division. ## Scripture connections - **John 17:20-23** — Jesus prays that all who believe in him "may be one," so that the world may believe; unity is his own desire. - **Ephesians 4:4-6** — "one body, one Spirit, one Lord, one faith, one baptism" — the deep ground of Christian oneness. - **1 Corinthians 1:10-13** — Paul rebukes division among believers, asking, "Is Christ divided?" - **Romans 6:3-4** — baptism unites a person to Christ's death and resurrection, the bond shared by all the baptized. - **Mark 9:38-40** — Jesus restrains his disciples from condemning someone doing good in his name who was "not one of us." ## Church teaching references - CCC 816, 817, 818, 819, 820, 821, 822 - The Second Vatican Council's *Lumen Gentium* (1964) teaches that the one Church of Christ "subsists in" the Catholic Church while elements of sanctification and truth are found beyond her visible boundaries. - The Council's decree *Unitatis Redintegratio* (1964) sets out the Catholic approach to ecumenism and the restoration of Christian unity. ## Reflection question Is there a Christian of another tradition in your life whom you could begin to see, and treat, as a genuine brother or sister in Christ — and how might you pray or work with them toward the unity Jesus asked for?