Original Sin. Part 4. A Deeper Dive – The Reformers

May 28, 2026
Two hands are extended: the woman's hand offers a red apple to the man's hand. The shadow cast by his hand shows a snake instead of the apple. Genesis 3:1-6 Eve, Adam, Lilith. The original sin.

I asked ChatGPT to go even deeper. A really helpful next step would be:

  • tracing how this develops intoĀ semi-Pelagianism, and
  • comparing Augustine with later thinkers like Thomas Aquinas and the Reformers.

šŸ“˜ 1. Semi-Pelagianism — The ā€œmiddle position.ā€

After Augustine, some Western theologians felt his view went too far in emphasizing human inability. They tried to preserve both:

  • the necessity of grace (But is this grace really grace or is it justice?)
  • and a meaningful human role at theĀ beginningĀ of salvation

Key figures:

  • John Cassian
  • Vincent of LĆ©rins

šŸ”¹ What Semi-Pelagianism teaches

1. The first move toward God can come from us.

Humans can initiate faith (e.g., desire God, seek Him)

Then, God responds with grace to help and complete salvation.


2. Grace is necessary—but not for the beginning

Grace is required for:

  • growth
  • perseverance
  • salvation

But not strictly for the first step of faith.


3. Free will is weakened—but not bound

Human nature is:

  • damaged
  • but still capable of turning toward God

šŸ”¹ Example (John Cassian)

From his Conferences:

ā€œThe beginning of goodwill is sometimes due to ourselves… but its completion belongs to God.ā€


šŸ”¹ Why Augustine opposed this

Augustine’s response would be:

Even the beginning of faith must be a gift of grace. (Again, this is not a gift of grace but justice.)

Otherwise:

  • grace becomesĀ reactiveĀ (God responds to us)
  • rather thanĀ initiatingĀ (God acts first)

šŸ”¹ Official resolution

At the Second Council of Orange (529):

  • Semi-Pelagianism isĀ rejected
  • But Augustine is alsoĀ softened slightly

Key canon: ā€œEven the beginning of faith… is a gift of grace.ā€ (This is not grace. It is justice.)

BUT:

  • The council avoids strong predestination language that Augustine championed
  • It preservesĀ human cooperation after grace begins or initiates salvation

šŸ“˜ 2. Development after Augustine

Now we move forward into medieval and Reformation theology.


šŸ›ļø A. Thomas Aquinas (13th century)

Aquinas tries to synthesize Augustine with a more balanced anthropology (man’s nature and role in salvation)


šŸ”¹ Aquinas’s key ideas

1. Grace perfects nature (doesn’t destroy it)

ā€œGrace does not destroy nature, but perfects it.ā€

Meaning: Human nature is fallen, but still real and functional

  • Grace heals and elevates it

(It is said that grace heals and elevates nature, but ability is still real even though it is fallen and weakened. But what does that mean? It means that we are born with an inclination to sin, but we can still say no to sin. Is that not a form of inability? Did Jesus have this inclination to sin? If not, how then does Jesus know what it is like to be tempted as we are? How is it true that Jesus took on our nature?)


2. God moves the will—but not coercively

God causes us to will the good, but in a way that preserves real freedom

(What in heaven’s name does that mean? ā€œGod causes us to will the good.ā€ If that is true, then we are unable to do it ourselves. How does that preserve real freedom? It doesn’t. It should read that God encourages and persuades us (not causes us) to will the good and that will preserve real freedom.)


3. Cooperation (synergy)

Humans truly cooperate with grace:

  • but only because graceĀ enabled that cooperation first

(We have here the false idea that grace enables our cooperation but that mistakes justice for grace.)


šŸ”¹ Summary of Aquinas

  • Closer to Augustine than Pelagius
  • But avoids the harsh determinism of Augustine
  • Ends up somewhat closer to theĀ Eastern ā€œsynergyā€ model, philosophically

āœļø B. The Reformers (16th century)

Figures like:

  • Martin Luther
  • John Calvin

They return strongly to Augustine, often going even further.


šŸ”¹ Luther (Bondage of the Will)

Against Desiderius Erasmus:

ā€œFree will is a mere name… without the grace of God it can do nothing.ā€

Key idea:

  • The will isĀ boundĀ by sin

(Mankind doesn’t have free will if we are born sinners, who can do nothing but sin.)

  • Salvation is entirely God’s work

(At least Luther was honest enough to admit the obvious: man doesn’t have free will. But he also claims that justice is grace, and it is not. In justice, not grace, God gives us the ability to respond to Him under Luther’s false Augustinian foundation.)


šŸ”¹ Calvin

1. Total depravity and total inability.

Human nature is:

  • not just weak
  • but radically corrupted, totally depraved, and totally unable

2. Unconditional election

God chooses who will be saved:

  • not based on foreseen merit or decision

3. Irresistible grace

When God gives saving grace, but only to the few who are elect:

  • ItĀ effectively brings about faith

(There is no grace in Calvinism and only a little justice. See my other articles on this subject.)


šŸ”¹ Summary of Reformers

ThemeAugustineLuther/Calvin
Human abilityCannot do good without graceEven stronger inability
GraceNecessary for all goodAbsolutely decisive
Free willReal but boundOften minimized further
PredestinationPresentStrongly emphasized

āš–ļø Big Historical Arc

Here’s the simplest way to see the trajectory:

Early Church (esp. East)

āž”ļø Strong free will + cooperation

Augustine

āž”ļø Strong grace + weakened will

(I do not believe it. Augustine’s view was not just that our will is weakened, but it is bound and enslaved to sin.)

Semi-Pelagianism

āž”ļø Tries to rebalance toward human initiative

Orange (529)

āž”ļø Affirms: grace begins everything

Aquinas

āž”ļø Harmonizes: grace + real cooperation

Reformers

āž”ļø Return to (and intensify) Augustine’s non-free, free will, and determinism


🧭 Final clarity

(That is an interesting word choice by ChatGPT. Clarity is near non-existent in Augustinian Calvinism and its necessary entailments.)

At the heart of all these debates is one question:

Who makes the first move in salvation—God or man?

  • Pelagius → Man
  • Semi-Pelagians → Man (first step), then God
  • Augustine → God
  • Aquinas → God first, then real cooperation
  • Reformers → God alone, decisively

Final Comments

It is amazing the lengths people will go to excuse man from his responsibility to obey God. Augustine taught that we are born sinners, incapable of doing good and able only to sin. Yet, according to Augustine, we are still responsible for our disobedience.

But every honest person knows that a just God will not condemn anyone for failing to do what they are incapable of doing. Augustine’s new theology actually turned out to be a great excuse for ongoing sin in the life of the believer, justifying man’s irresponsibility toward God.

In that is Augustinian Calvinism doing the work of God or the work of the devil?

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