If the God revealed to the Hebrews is real, if Jesus Christ is truly the Son of God and shares the divine nature within the Trinity, and if Romans 3:23 is accurate when it says that “all have sinned and fall short of the glory of God,” then we should expect the human story to bear some resemblance to the biblical description of humanity.
And it does.
This is not a laboratory proof of Christianity. History cannot place God in a test tube. But when we compare the biblical account of humanity with what human beings have actually experienced across cultures and centuries, the fit is striking.
The Bible begins by saying that humanity was created in the image of God.
“So God created man in his own image.” — Genesis 1:27
That helps explain why human beings are capable of remarkable things. We create art and music. We pursue justice. We sacrifice ourselves for our children. We care for strangers. We develop medicine, build communities, seek truth, show mercy, forgive enemies, and sometimes give our lives for people we barely know.
There is something magnificent about humanity.
But Genesis does not end in Genesis 1.
By Genesis 3, humanity has rebelled against God. Shame enters the human experience. Adam and Eve hide. They blame one another. Relationships fracture. Cain murders Abel. Violence spreads.
The biblical account of Adam and Eve presents humanity as originally created good but subsequently corrupted by sin, while still retaining the image of God.
That combination explains something we encounter everywhere in human history:
Human beings are capable of extraordinary good and extraordinary evil.
The Bible does not say that human beings are as evil as they could possibly be. Nor does it say that people are basically good and simply need better education.
It says something more complicated and far more recognizable.
We were made for good, but something is wrong with us.
Romans 3:23 puts it plainly:
“For all have sinned and fall short of the glory of God.”
One of the strongest confirmations of that statement is that human beings seem to know the difference between good and evil, yet consistently fail to live according to what we know.
Across civilizations, people have developed moral concepts involving justice, honesty, courage, faithfulness, compassion, family obligation, protection of the innocent, condemnation of betrayal, and prohibition of unjustified killing.
Cultures disagree over many things, but humanity has never successfully lived without moral categories.
We instinctively speak in terms of what people ought to do.
We do not merely say, “I dislike murder.”
We say, “Murder is wrong.”
We do not simply dislike injustice when it happens to us. We believe something has happened that should not have happened.
Paul describes something remarkably similar in Romans 2 when he writes that even those who do not possess the written law may nevertheless demonstrate that “the work of the law is written on their hearts,” while their conscience accuses or excuses them.
Humanity appears to possess a moral awareness that exceeds simple preference.
But there is another problem.
We do not consistently obey the morality we recognize.
We praise honesty and then lie.
We condemn greed while rationalizing our own accumulation.
We demand justice from others while asking for mercy for ourselves.
We resent the selfishness of other people while explaining our own selfishness as necessity.
We condemn anger in someone else and call our own anger justified.
Jesus exposed this tendency when He spoke about seeing the speck in another person’s eye while ignoring the log in our own.
Jeremiah described the deeper problem:
“The heart is deceitful above all things.”
Our problem is not merely that we sometimes do wrong.
We are extraordinarily skilled at explaining to ourselves why our wrong behavior was actually reasonable.
History confirms something else Scripture teaches: evil is not confined to unusually monstrous people.
Ordinary people can do terrible things.
Under enough pressure from fear, ideology, tribal loyalty, resentment, greed, obedience to authority, or self-preservation, ordinary men and women can participate in acts they would once have considered unthinkable.
Human history repeatedly demonstrates this.
Education does not eliminate it.
Technology does not eliminate it.
Prosperity does not eliminate it.
Political systems do not eliminate it.
Human progress can increase our power without necessarily increasing our goodness.
Technology can cure disease.
Technology can also industrialize killing.
Government can protect the weak.
Government can also oppress them.
Religion can produce saints.
Religion can also be manipulated by proud and sinful people.
Every system eventually encounters the same problem:
the human heart.
Jesus said:
“For from within, out of the heart of man, come evil thoughts.” — Mark 7:21
This is why every attempt to build a perfect society eventually encounters human sin.
Change the economic system and sinful people operate the new economy.
Change the political system and sinful people acquire political authority.
Redistribute power and the people receiving power become capable of abusing it.
Increase education and educated people become capable of sophisticated wrongdoing.
Change institutions, and institutions may improve enormously. Good institutions matter.
But no institution can regenerate the human heart.
The Christian diagnosis goes deeper.
Something has happened inside humanity.
Yet another strange feature appears throughout human civilization.
We do not merely recognize wrongdoing.
We experience guilt.
And throughout history human beings have sought some form of cleansing, sacrifice, forgiveness, reconciliation, atonement, penance, absolution, or restoration.
Religions throughout the world differ radically, and Christianity does not teach that every religion is equally true.
But the repeated human search for forgiveness raises an important question.
Why do human beings seem to believe that something needs to be made right?
We do not merely seek knowledge.
We seek absolution.
Christianity gives that experience a theological explanation.
We were created for relationship with God.
Sin has damaged that relationship.
And we cannot completely repair it ourselves.
This is where Jesus Christ becomes central.
Christianity is not fundamentally the announcement that Jesus came to give humanity a better ethical code.
Jesus certainly taught us how to live.
But the gospel claims something much greater.
Jesus came to rescue and reconcile humanity.
Paul deliberately contrasts Adam with Christ in Romans 5.
Through Adam come sin, condemnation, and death.
Through Christ come righteousness, justification, and life.
Paul later calls Jesus “the last Adam.”
The historic Christian understanding reflected in early Christian theology likewise sees Christ as the One who restores what humanity lost through Adam.
This means Christianity is not primarily about becoming slightly better people.
It is about redemption.
And that brings us to one of Christianity’s most difficult questions:
If God is good, why is there so much evil?
The Bible never dismisses that question.
Job asks it.
David cries about it.
Habakkuk wrestles with it.
The prophets confront it.
Jesus Himself weeps in a world marked by suffering and death.
But the existence of evil also creates a question for those who reject God.
When we call something genuinely evil, what do we mean?
If morality is ultimately nothing more than personal preference, social convention, or evolutionary usefulness, then we may certainly say that we dislike cruelty.
But it becomes harder to say that cruelty is objectively wrong regardless of whether a particular society approves of it.
Christianity has a coherent reason for saying that some things are truly evil.
Human beings possess intrinsic dignity because they bear God’s image.
Moral truth ultimately reflects God’s holy character.
Therefore murder, oppression, cruelty, hatred, abuse, and injustice are not merely socially inconvenient.
They violate something real.
And then Christianity makes its most astonishing claim about evil.
God entered it.
At the cross, Jesus encounters betrayal, political corruption, religious hypocrisy, false accusation, torture, abandonment, violence, and death.
Christianity does not present a God who observes human suffering safely from a distance.
In Jesus Christ, God enters the suffering of this fallen world.
And at the cross we see the biblical picture of humanity with extraordinary clarity.
Human beings are capable of crucifying the righteous Son of God.
Yet God responds to human rebellion by offering redemption.
That is why Romans 3:23 must never be separated from what follows.
“All have sinned and fall short of the glory of God,
and are justified by his grace as a gift, through the redemption that is in Christ Jesus.”
Romans 3:23–24
The earliest Christians understood the gospel in these terms. They spoke repeatedly about repentance, humility, righteousness, love, moral transformation, judgment, resurrection, and salvation through Christ. Clement of Rome, for example, called Christians away from envy, pride, division, and sin and toward repentance, humility, faith, and love.
Second-century Christian writers also defended both belief in the Father, Son, and Holy Spirit and the transformed moral life expected of those who followed Christ.
Christianity’s claim has therefore been remarkably consistent from its earliest generations.
This is what God is like.
This is what humanity was created to be.
This is what has gone wrong.
This is what God has done in Jesus Christ.
And this is what redeemed human life should begin to become.
When I look at human history through that framework, several facts seem difficult to ignore.
We know there is good.
We know there is evil.
We somehow know that we ought to choose good.
Yet none of us does so consistently.
We demand justice.
Yet when justice turns toward us, we plead for mercy.
We possess astonishing dignity.
Yet we are capable of astonishing depravity.
We repeatedly try to repair the human condition through education, wealth, government, technology, philosophy, or social reform.
These things can accomplish tremendous good.
But none has succeeded in eliminating the fundamental problem inside us.
Christianity gives names to what we keep encountering:
the image of God,
the Fall,
sin,
conscience,
grace,
redemption,
and Jesus Christ.
None of this mathematically proves that Christianity is true.
But it does raise an important question.
If the biblical account of God and humanity were true, what kind of world would we expect to see?
We would expect creatures capable of extraordinary beauty because they were created in God’s image.
We would expect those same creatures to exhibit profound moral corruption because humanity has fallen.
We would expect people to possess a persistent awareness of right and wrong.
We would expect them repeatedly to violate that standard.
We would expect guilt and a longing for reconciliation.
We would expect human solutions to improve conditions without finally curing the human heart.
And we would expect humanity ultimately to need redemption rather than merely instruction.
That is remarkably close to the world we actually inhabit.
Perhaps one of the strongest experiential arguments for the Christian understanding of humanity is therefore this:
We seem to know that we were made for something better.
And yet, generation after generation, we discover that we cannot make ourselves into what we know we ought to be.
The Christian gospel says that this longing is not an accident.
We were created for God.
We have fallen short of His glory.
And God has come looking for us in Jesus Christ.
Personal Note
For me, this is not merely a philosophical argument about whether Christianity can explain human behavior better than competing worldviews.
I see this tension in the world around me, but I also see it in myself.
I know that I am capable of love, generosity, faithfulness, compassion, and sacrifice. I also know how easily pride, frustration, selfishness, fear, anger, and self-justification can enter my thinking. I can recognize what is right and still struggle to do it. I can see another person’s failures clearly while remaining surprisingly capable of explaining my own.
That makes Romans 3:23 personal.
“All have sinned” includes me.
But Romans 3:24 includes me as well.
The Christian faith does not ask me to pretend that I am better than other people. It asks me to admit that I need the same grace I proclaim to everyone else.
The older I get and the more of life I see, the less convincing I find the idea that humanity’s deepest problem can be solved merely by becoming smarter, richer, more technologically advanced, or politically organized in the right way. Those things can improve life, and many of them are worth pursuing, but they cannot change the deepest movements of the human heart.
I increasingly understand why the gospel speaks not merely of education or improvement, but of repentance, forgiveness, regeneration, sanctification, and redemption.
And that is ultimately where this question leads me.
If God is real, I do not merely need evidence that He exists.
I need to know what He has done about the evil I see in the world and the sin I recognize within myself.
The Christian answer is Jesus Christ.
At the cross, God does not merely explain the problem.
He enters it.
In the resurrection, He announces that sin, evil, suffering, and death will not have the final word.
And in grace, He begins changing people now.
That does not answer every question I have.
But it gives me a framework that makes sense of both the darkness and the beauty I have encountered in humanity—and gives me hope that neither my failures nor the failures of this world are the end of the story.
John Hargrove Seeking Truth and Reality 