What John Calvin Taught Me About Sin
- Kelvin Kou Vang
- 2 days ago
- 6 min read

A Confession
There was a time when I couldn't understand how the Gospel could be the answer to the problems of this world—injustice, violence, corrupt systems. How could a message about a risen Savior who "so loved the world" change it?
The Gospel I had in mind was not the true Gospel at all. It was a shadow of it—a mere half-truth. I had made Christianity all about me. I had made the purpose of Jesus about me. I fabricated a faith that removed the ugliness of Christianity only to live in a pretentious euphoria, one wrapped entirely in love, grace, and blessing.
But when I consider true Christianity, I come to realize that the Gospel is not only the good news; it's also the bad.
The Problem Laws Cannot Solve
Throughout history—and especially today—many believe laws can change a society. Gun laws are made stricter to prevent future havoc. Abortion laws are tightened to protect innocent lives. While these things have some influence, the truth that this generation does not grasp is that laws will not change the person’s heart.
The same can be said of the Law of God—the Mosaic Law, the Ten Commandments. We can read all about not bearing false witness and still conspire rumors behind closed doors. We can read about not committing adultery and still look at someone lustfully. We can read about not murdering and still carry hatred in our hearts.
Rules and regulations might train you to outwardly conform, but there is no true inward transformation. In the eyes of the Lord, it's all just a performance—something we do for the sake of doing, and most times, for our own self-esteem.
Laws could never change a person's heart. That is the uncomfortable truth.
You Can't See Yourself Until You See God
One day I came across one of John Calvin's greatest works—one that contributed fundamentally to the Church during the Reformation. In the opening chapters of the Institutes of the Christian Religion, a foundational truth is laid out that I believe is often neglected: we cannot see ourselves truly if we do not first see God properly.
If our view of God is off, we don't just end up with bad theology—we end up spiritually blind. We fabricate a Christianity that quietly cuts out the very thing that produces life-giving knowledge and wisdom: holy fear and reverence of God (Proverbs 1:7). We stop seeing Him as truly just and truly holy. The thought of offending Him stops bothering us altogether because we've bought into the lie that grace is a license to sin.
And if we stay on that road long enough, we may not realize until it's far too late that the god we've been worshiping was never God at all—only the Devil dressed up as an angel of light, and what we've been bowing to was nothing more than an idol (2 Corinthians 11:13–15).
A Christianity with no fear or reverence of God is no Christianity at all. That is the issue with today’s “Christianity.”
The Jesus We've Invented
There is a kind of "Christianity" that many subscribe to. For those people, Jesus is all-loving, all-understanding, and deeply sympathetic. He is there to comfort you in your sinning—He won't judge you for it, because He will only give you more grace. He understands the world is broken. He knows you will fail. And as long as you have faith, He will never hold your sin against you. In fact, He roots for you.
But that's where many have it wrong.
We are all naturally bent toward self-deception, often thinking we are something when we are not (Galatians 6:3). We consistently underestimate our own sinfulness. And because of that, many have meddled with the image of Jesus so much that they've stripped Him of everything He is—picking and choosing what they want their Jesus to be like. Tim Keller put it best: "If we're honest, we prefer Jesus as a consultant rather than a King."
That is the tragedy of cheap faith. People don't go to hell because they lack faith; they go to hell because of sin. This is what Scripture says: "You believe that God is one; you do well. Even the demons believe—and shudder!" (James 2:19). Conviction without action is no conviction at all—it is just an empty profession. Likewise, faith without repentance is dead. It's almost like telling your spouse that you love them when your very actions say otherwise. That’s not real love.
Just think about this for a second.
When was the last time you went to God—not for comfort, but because you knew you had sinned against Him? When did you last grieve over it, feeling the weight of having broken the heart of a holy God? When was the last time you truly fixed your eyes on Christ to overcome sin?
This is what Calvin was saying all along: we are so prone to hypocrisy that the mere appearance of righteousness satisfies us. The tragedy is that we settle for whatever seems least corrupt and gladly call it holy. There is no need for us to go to God in repentance when we see ourselves sufficient. That is a very dangerous place to be.
What Revival Actually Looks Like
When I look at modern Christianity, many have become so satisfied with the mere appearance of godliness that they've lost all hunger for the real thing, grading themselves on effort and reputation rather than actual spiritual reality.
There are many attempted revivals built on these premises: long worship nights, “fellowship,” and activities. And when the Word is opened, the message often circles the same points:
God loves you.
God gives you grace.
Jesus died for you.
Love your neighbor.
These things are true. But they are not the whole truth.
Within the biblical framework, revival only happens when the Holy Spirit moves through the rightly divided Word of God. When the Gospel is proclaimed faithfully, dead bones come to life. And that always involved two things we tend to neglect: sin and repentance.
Souls are not revived through feel-good events. Souls are revived when they face the burdening guilt and shame of their sins and, in turn, become overwhelmed by God's forgiving grace and are spurred onto new life. That is true revival.
The Gospel does not stop at the death of Christ on the cross. Nor does it stop at His resurrection. It is penetrative. Through its message, the Holy Spirit spurs individuals on to faithful living—not just “good” works, per se, but a right view of God and self.
A Christian life is a repentant life.
The Ugly Reality—and the Only Answer
We are all spiritually and morally bankrupt. We cannot enter the presence of God without dying under His just wrath. Why? Because that is the consequence of our sin and rebellion. He will not tolerate transgressors where justice has not been served.
We cannot know ourselves rightly until we have first looked upon God. When we see Him as He truly is—holy, just, and sovereign—we cannot help but see our own ruin. That's why we needed God's Law, for it points to His perfect character—the standard we must measure ourselves against, not the lesser things.
And until we see our ruin and our inability to keep the moral Law, we will never take sin seriously. Until we take sin seriously, we cannot love God as He deserves. And, ultimately, those who do not love God will not enter His gates.
But here is where the Gospel turns.
Right here, at the bottom of our ruin, at the very place where we have nothing left to offer—God met us. Not because we cleaned ourselves up. Not because we found our way back. But because of His lovingkindness, He pursued us while we were still sinners (Romans 5:8).
And that is the answer.
Not rules. Not legislation. The broken world does not need better laws; it needs changed hearts. And hearts do not change by force or obligation. They change when they encounter the person of Jesus Christ.
This is what I could not see when I was younger. I was looking for the Gospel to fix the world from the outside in, but the Gospel has always worked from the inside out. The Gospel does not merely renovate the spiritually dead man—it resurrects him. It does not merely modify his behavior and actions—it gives him a new heart.
The Holy Spirit changes hearts, and changed hearts change the world.
A Question Worth Sitting With
As I come to a close, there is a genuine question worth wrestling with. I believe it would shape how we view God, ourselves, and accountability as a whole. You may have noticed that I've sprinkled implications throughout that sin just isn't being taken as seriously as it should. And this is a question of self-reflection, to draw us back to God, and to be revived in the mercies of His grace. I leave you with this:
Do you believe the holy and just God sees sin as atrocious, and do you see it the same way He does?


