Calvinism, Illumination, and the Real Question Behind *Sola Scriptura*

I’ve been listening to a debate on sola Scriptura and illumination, and it made me realize something.

I don’t actually think the biggest disagreement between Orthodoxy and Calvinism is about the Bible.

I think it’s about something much deeper.

It’s about how we actually know God.

Most debates start with sola Scriptura, but I don’t think that’s where the real issue is. Sola Scriptura is really downstream from a much bigger question.

How does a creature participate in the life of God?

How does someone recognize Scripture as Scripture?

How does the Holy Spirit illuminate someone?

Those questions eventually force us into theology and metaphysics.

The Canon Problem

One of the reasons I’ve never found sola Scriptura convincing is that it simply doesn’t describe how the early Church lived.

The apostles didn’t hand the Church a completed New Testament and tell everyone to go read it.

For centuries the Church preached, baptized, celebrated the Eucharist, fought heresies, and worshiped without universal agreement on the complete canon.

So I have to ask…

If sola Scriptura is supposed to be the foundation of Christianity, how did the Church function before everyone even agreed on what Scripture was?

The Church didn’t begin with a Bible.

The Bible came from the life of the Church.

That doesn’t diminish Scripture. If anything, it raises another question.

How do I know these sixty-six books are the right ones?

Every Protestant inherits a canon they didn’t determine.

There isn’t an inspired table of contents in Scripture itself.

So eventually everyone has to answer the same question.

How do you know you’re actually reading the Word of God?

“The Holy Spirit Tells Me”

Most Reformed Christians answer that question by appealing to the inward testimony of the Holy Spirit.

In other words, the Spirit illumines the believer so he recognizes Scripture as God’s Word.

I actually agree that the Holy Spirit illumines believers.

But here’s where I start asking more questions.

What does illumination actually mean?

How does that happen?

What exactly is the Holy Spirit doing?

When God illumines someone, are they actually participating in God Himself?

Or are they only experiencing some created effect?

That’s where I think the conversation leaves biblical exegesis and becomes a discussion about the nature of God.

Where I Think the Real Difference Is

This is why I don’t think the debate is ultimately about verses.

It’s about metaphysics.

Orthodoxy says we truly participate in God’s uncreated energies while never participating in His essence.

That distinction explains how God can remain utterly transcendent while still genuinely giving Himself to His creation.

Without that distinction, I honestly don’t know how illumination works.

The Reformed tradition absolutely says that God regenerates and illumines His people.

I’m not questioning that confession.

I’m questioning whether the underlying theology explains how that’s possible.

If every attribute of God is simply identical with the divine essence, and the divine essence cannot be participated in, then what exactly are we participating in?

That’s the question I keep coming back to.

John 17 Changed How I Think About This

Jesus says that He gives us the glory He shared with the Father before the foundation of the world.

That glory isn’t created.

The eternal life shared by the Father and the Son isn’t created.

Peter says we become partakers of the divine nature.

Paul talks about being transformed from glory to glory.

The New Testament doesn’t describe salvation as merely receiving created gifts.

It describes communion with God Himself.

Orthodoxy says we participate in God’s uncreated energies, not His essence.

To me, that actually explains what the New Testament is describing.

Where I’ve Landed

The more I study this, the more I think the disagreement between Orthodoxy and Calvinism isn’t primarily about salvation or even about sola Scriptura.

Those are symptoms.

The real disagreement is about God Himself.

How does God reveal Himself?

How does He communicate Himself?

How do finite creatures genuinely know the infinite God?

Right now it seems to me that Calvinism consistently applies medieval Western assumptions, particularly absolute divine simplicity and created grace, to the doctrine of salvation.

Whether that’s correct is another discussion.

But that’s where I think the conversation really belongs.

Not at the level of isolated proof texts.

At the level of the doctrine of God itself.