Why I'm Catholic

This is likely the first in a series of posts exploring why I converted to Catholicism. Future posts will address tradition, the origins of the Bible, and the question of authority. But I'm starting here because this is where it started for me.

I didn't become Catholic because I was persuaded by the Church Fathers, though I find them compelling. I didn't convert because of the beauty of the liturgy, though it moves me deeply. I didn't even convert because I became convinced of specifically Catholic doctrines like the real presence or the Marian dogmas, though I hold all of them with conviction.

I became Catholic because of a conviction about Jesus Christ. Specifically, a conviction about what it means for him to be Lord.

That conviction, once I followed it honestly, left me with nowhere else to go.

The Body of Christ Is Not a Metaphor

Paul's letters return again and again to the image of the Church as the body of Christ. It is one of the most familiar ideas in Christianity, so familiar that it's easy to pass over without noticing what he's actually claiming.

To the Ephesians he writes that God "put all things under his feet and gave him as head over all things to the church, which is his body, the fullness of him who fills all in all" (Eph 1:22-23). To the Colossians: "He is the head of the body, the church. He is the beginning, the firstborn from the dead, that in everything he might be preeminent" (Col 1:18). Again to the Ephesians: "Christ is the head of the church, his body, and is himself its Savior" (Eph 5:23).

Paul is not merely using decorative language here. He is not reaching for a convenient analogy to describe how Christians relate to one another. He is making an ontological claim.

For me, recognizing this grew directly out of my faith in the sovereignty of God. As that faith transformed into a living relationship with him through worship, it dictated how I read Scripture. I realized I could no longer treat these passages as isolated "proof texts." They had to be understood through the reality of who Christ actually is: the enthroned King.

Over the course of my journey, as this became a truth that took root in me, it surfaced a question that I could not get around.

Is Christ Divided?

Paul asks this question himself, and he clearly expects the answer to be obvious. "Is Christ divided?" (1 Cor 1:13). Of course not. An undivided head cannot govern a fragmented body. If Christ is one, then his body must be one. Not in some invisible, spiritual sense that conveniently allows for forty thousand denominations to all claim membership. One body. Visibly, identifiably one.

He makes the point explicitly: "There is one body and one Spirit, just as you were called to the one hope that belongs to your call, one Lord, one faith, one baptism, one God and Father of all" (Eph 4:4-6). Repetition is always used in the Scriptures for emphasis of something important. One body. One Spirit. One Lord. One faith. One baptism. Paul is not describing an aspiration. He is describing a reality. The unity of the Church is grounded in the unity of God himself.

This created a profound problem for me. As a confessional Lutheran, I believed I was holding the "best" of serious Protestant theology. We had all the theological i's dotted and the t's crossed. But Paul's absolute insistence on one body forced me to grapple with a difficult question: who exactly is making the determination that the Lutheran faith is the truest representation of this supposedly undivided Church?

Following that question to its logical end left me with a stark choice. Either I was the ultimate authority, relying on my own intellect to judge which denomination had the winning arguments, or Christ is the authority. And if Christ is the true authority, I couldn't keep acting as the umpire of a fractured church. Rather, Christ is the head of the Church he established and the Church herself is the umpire.

The Gates of Hell Will Not Prevail

The fragmentation problem is serious enough on its own. But there is another layer to it that I found even harder to escape.

Christ makes a promise: "On this rock I will build my church, and the gates of hell shall not prevail against it" (Matt 16:18). At the end of Matthew's Gospel, after the resurrection, he says to his disciples: "All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age" (Matt 28:18-20).

These are not conditional promises. They are not qualified or time-limited. Christ does not say the gates of hell will not prevail unless things go badly in the fourth century. He does not say he will be with his disciples always, unless the Church falls into corruption and needs to be rebuilt from scratch by reformers fifteen centuries later. He did not say he will be with his disciples always from the point where America is born onward. He speaks absolutely. The gates of hell will not prevail. I am with you always. To the end of the age. The King of the Universe says this.

If these promises mean anything, they mean the Church cannot fail. It cannot apostatize. It cannot be overcome. Not because the people in it are sinless, but because the one who sustains it has all authority in heaven and on earth.

The most common way to harmonize this with a fractured Christian world is the doctrine of the invisible Church, the idea that the true Church is a spiritual reality, scattered across denominations. It is an elegant concept, but I eventually found that it couldn't bear the weight of what Christ actually promised. Relocating the Church to an invisible, spiritual plane places it where those promises can neither be kept nor broken in any meaningful, historical sense. An invisible body cannot have the gates of hell prevail against it, because it has no boundaries to attack or to leave.

Paul simply doesn't write to an invisible body. He writes to the Corinthians, the Ephesians, the Romans as visible communities with leaders, sacraments, structures, and visible markers (works, as James put it) that could be found and corrected. That visible body is the one Christ promised to keep. If that body has fractured beyond recognition, the promise has failed. If the promise has not failed, that body is still here.

What This Means

Here is where the argument became unavoidable for me.

If Christ is the head of the Church, and the Church is his body, then the body must be one, because Christ is one. If the gates of hell will not prevail against it, then the Church must be intact, because Christ promised it would be. If he is with his people always, to the end of the age, then there has never been a moment in history when the Church ceased to exist or lost its way so thoroughly that it needed to be replaced.

And the consummation of these related convictions: this is not an argument about ecclesiology; it is an argument about Christology. It is a claim about who Christ is and whether his power is sufficient to keep his promises.

To believe that the Church fractured beyond recognition, or apostatized, or lost the Gospel and had to be recovered by later reformers, is to believe, in effect, that Christ either made promises he could not keep, or made promises he chose not to keep. I could not accept either option. Not because of what it said about the Church, but because of what it said about him. This gradual realization led me here: the Reformation, taken seriously, reveals as much about who it believes Christ is not as about who it believes he is. And it implies a Christ who could not keep his own promises.

I want to be clear: this is a destination I arrived at without interacting with a Catholic apologist or resource. It was a theological conviction formed by what I believed about God through the Protestant Bible, prayer, and worship.

Where Is the Body?

Once I accepted that the Church must be one and continuous, it became apparent that this was the destination of the trajectory of my faith all along. My journey of drawing closer to God followed a thread that walked back progressively, chronologically to Jesus himself, the founder of the faith and the rabbi who established the Christian tradition. The truth is, I wasn't setting out to become Catholic, or even asking if I should be. I was simply driven by a single, inescapable question: where is the body?

Answering that didn't require me to weigh competing theological systems against each other; it required me to look at history. If the body of Christ is a visible reality, it must have left a continuous footprint. I wasn't looking for a utopian community free of internal disagreement or human failure. I was looking for survival. I needed to find a body that possessed the structural and sacramental continuity Paul described, a Church that was undeniably present in the second century, the fifth century, the tenth century, and today, without a break.

I am not going to press that historical argument in this post. That is likely a future installment in this series. Here I only want to make the point that the question itself arises from Christology, not from church history. I did not start by comparing churches and selecting the most convincing one. I started with a conviction about Christ, that he is Lord, that his promises hold, that his body is one and intact, and then asked where that conviction could land.

It could only land in one place.

I'm Catholic as a Matter of Christology

I am Catholic as a matter of Christology. If Christ is Lord of all, and the gates of hell will not prevail against his Church, then it is a matter of faith in Christ that his Church is intact. Not faith in the Church for the Church's sake. Faith in him. Trust that he meant what he said and has the authority to accomplish it.

To believe otherwise would be for me to diminish him. It would be for me to say that his authority extends to heaven but not to history. That he can save a soul but cannot preserve a community. That his promises are true in the abstract but have failed in practice. I could not say any of those things and still call him Lord in the way that Scripture demands. I know how jarring this might sound to Protestant ears, but it is necessary for me to say, because it forms the very essence of my journey to this destination.

My conversion was not primarily a decision about which denomination had the best arguments. In fact, my conversion was a surrender of intellect to faith, even though the Catholic Church provided a fertile ground for intellectual exploration. But primarily it was the recognition that if I took Christ seriously, seriously as Lord, seriously as the head of a body, seriously as the one who holds all authority and keeps all promises, then the Church he built must still be here, and it must still be one.

Everything else flowed from this single premise: the sacraments, the Marian dogmas, the authority of the magisterium. I didn't submit to these teachings out of blind credulity. Once I knew the body was intact, trusting the voice of the Church simply became the necessary consequence of trusting her Head.

He is the head. The body is one. The gates of hell have not prevailed.

That is why I am Catholic.