Short answer: Original sin is the Bible's teaching that when Adam disobeyed God in the garden, sin and death entered the human race, so that every person since is born with a nature already bent away from God. It is not a single act we copy; it is a condition we inherit. The remedy is just as inherited in the other direction: what Adam ruined, Christ undoes for all who trust him.
In This Article
The phrase "original sin" does not appear anywhere in the Bible. People sometimes hear that and conclude the idea was invented later. But a word missing from the page is not the same as a truth missing from it. The Trinity is not a biblical word either. What matters is whether Scripture teaches the thing, and on this one it does, in Genesis, in the Psalms, and most plainly in Paul.
People in the pews kept asking me versions of the same question: if a baby has never done anything wrong, how can we talk about sin at all? Good question, and worth taking slowly. Below I walk through Genesis 3, Romans 5, the different ways Christian traditions read it, the matter of babies, and the good news at the bottom of it all. If you want the wider background first, start with what sin is in the Bible.
What Happened In Genesis 3?
God placed Adam and Eve in a garden with one prohibition: do not eat from the tree of the knowledge of good and evil. A serpent questioned what God had said, suggested God was holding something back, and Eve ate. Adam, who was with her, ate too.
When the woman saw that the fruit of the tree was good for food and pleasing to the eye, and also desirable for gaining wisdom, she took some and ate it.Genesis 3:6 (NIV)
Notice what the temptation really was. It was not hunger. It was the offer to decide for ourselves what is good, to become our own authority. That is the root of every sin since.
The results came at once. Shame, hiding, blame-shifting (the man blamed the woman, and by implication God who gave her to him), a cursed ground, painful labour, and finally death: "for dust you are and to dust you will return" (Genesis 3:19). The couple was driven out of the garden and away from the tree of life. The fellowship with God they had known was broken.
The rest of Genesis reads like the consequences unrolling. Cain murders Abel within a chapter or two. By Genesis 6 the earth is full of violence. Whatever went wrong in Eden did not stay in Eden.
What Does Romans 5:12 Teach?
This is the key passage. Paul is explaining how one man's act can affect everyone else, and he says it directly:
just as sin entered the world through one man, and death through sin, and in this way death came to all people, because all sinnedRomans 5:12 (NIV)
Two things are held together here. Sin entered through Adam, and death spread to everyone because "all sinned." Christians have argued for centuries about how those two fit together. Is it that we all sinned in Adam, as our representative? That we inherit a corrupted nature and then sin ourselves? Both? The text does not draw the diagram for us. It does insist on the connection.
A few verses later Paul makes the parallel with Christ explicit:
For just as through the disobedience of the one man the many were made sinners, so also through the obedience of the one man the many will be made righteous.Romans 5:19 (NIV)
That parallel matters. If Adam's act could not truly affect us, neither could Christ's. Paul's gospel depends on one person acting on behalf of many. Strip out original sin and you quietly weaken the very logic by which Jesus saves.
Other passages support the picture. David confesses, "Surely I was sinful at birth, sinful from the time my mother conceived me" (Psalm 51:5). Paul writes that all of us "were by nature deserving of wrath" (Ephesians 2:3). And Romans 3:23 says flatly that all have sinned. Nobody has to be taught to be selfish; we only have to be taught not to be.
How Do Christian Traditions Differ?
Almost every branch of Christianity affirms that humanity is fallen. The disagreement is over what exactly is passed down. Here is a fair summary, and I want to describe each tradition the way its own people would.
| Tradition | What Is Passed Down | Remedy |
|---|---|---|
| Roman Catholic | Loss of original holiness, a wounded nature inclined to sin, and death. Catholic teaching calls it a state rather than a personal act. | Baptism removes original sin; the inclination toward sin remains. |
| Eastern Orthodox | Mortality and corruption, a broken human condition. Orthodox writers generally do not speak of inherited guilt for Adam's act. | Union with Christ; baptism and the life of the Church. |
| Lutheran and Reformed | Both guilt and total corruption. Every part of us is touched by sin, though not as bad as we could be. | Justification by faith alone through Christ's work; baptism is a sign (and for Lutherans a means of grace). |
| Wesleyan and Arminian | A deeply damaged nature. God's prevenient grace restores the ability to respond to him. | Faith in Christ, with God's grace at work before and after. |
| Many Baptist and free church traditions | A sinful nature from birth, with guilt becoming personal at an age of accountability. | Personal faith in Christ; believer's baptism as a testimony. |
Behind these differences sits an old debate. Augustine, in the early fifth century, taught that Adam's sin was passed to his descendants, guilt and all. His opponent Pelagius said people are born morally neutral and sin only by imitating Adam. The church rejected Pelagius, and the Catholic and Protestant traditions both drew heavily on Augustine, though they parted ways on the remedy. The East never adopted the Augustinian idea of inherited guilt in the same form.
I read the passages the way most evangelicals do: we are sinners by nature and by choice, and both facts need Christ. But I hold the finer points loosely, because Romans 5:12 itself leaves some questions open. You can disagree with a neighbour on the mechanism and still stand beside them on the gospel. For a related Catholic category, see my article on mortal sin.
Are Babies Born Sinful?
This is the question that makes the doctrine feel cruel to a lot of people, so let me be careful and gentle with it.
Scripture says our nature is fallen from the beginning. Psalm 58:3 says the wicked "go astray" from birth, and Psalm 51:5 says the same of David. What that means is that a newborn has the same fallen human nature as the rest of us. It does not mean a baby has committed adult sins or is a monster. The nature is there; the choices come soon enough, and every parent knows it.
The more anxious question is what happens to an infant who dies. Here the Bible is quieter than we would like. It never says such children are condemned. It does show a God who is tender toward children. Jesus said:
Let the little children come to me, and do not hinder them, for the kingdom of heaven belongs to such as these.Matthew 19:14 (NIV)
When David's infant son died, David stopped mourning and said, "I will go to him, but he will not return to me" (2 Samuel 12:23). Many Christians have read that as David's confidence that he would see his child again.
Traditions answer differently. The Catholic Church teaches that baptism is the ordinary way original sin is removed, and for unbaptized infants it entrusts them to God's mercy and expresses hope for their salvation. Many Protestants speak of an age of accountability or simply trust God's character. I would say to any grieving parent: the Judge of all the earth will do right (Genesis 18:25), and nothing in Scripture gives you reason to fear he has been unkind to your child.
How Does Christ Answer Original Sin?
The doctrine is not there to crush us. It is there to explain why we needed a Saviour and why the Saviour's work reaches as far as it does. Paul's whole argument in Romans 5 is aimed at this sentence:
For as in Adam all die, so in Christ all will be made alive.1 Corinthians 15:22 (NIV)
Adam is the head of one humanity, and Christ the head of a new one. We are born into the first without asking. We enter the second by faith, by trusting what Jesus did on the cross and in the empty tomb. The one who was tempted in every way and did not fall succeeded where Adam failed, and he gives that record to those who trust him.
That is why the gospel is good news and not self-improvement advice. If sin were only a bad habit we picked up, we could break it by effort. If it is a condition we were born into, we need rescue, and rescue is exactly what God offers. Paul says it simply: "Therefore, there is now no condemnation for those who are in Christ Jesus" (Romans 8:1).
It also changes how we live. Believers still struggle with the old pull, which is why sin after salvation is such a common worry, but we struggle as people who have a new nature and a new standing. For the practical side, see how we overcome sin, and for the bigger map of vice and virtue, the seven deadly sins give another way of seeing how the root produces the fruit.
Key Bible Verses About Original Sin
- Genesis 3:6: the first disobedience, and its real target: deciding for ourselves what is good
- Psalm 51:5: David acknowledges a sinful condition that goes back to the womb
- Romans 5:12: sin and death entered through one man and spread to all
- Romans 5:19: Adam's disobedience and Christ's obedience, set side by side
- 1 Corinthians 15:22: in Adam all die, in Christ all will be made alive
- Ephesians 2:3: by nature we were deserving of wrath, but God made us alive in Christ
- Romans 8:1: no condemnation for those in Christ Jesus
Frequently Asked Questions
What is the original sin?
In the strictest sense it is the first sin, Adam and Eve eating the forbidden fruit in Genesis 3. In theology the phrase usually means the effect of that sin on everyone after them: a fallen nature, a bent toward sin, and death. See Romans 5:12.
Is original sin in the Bible?
The phrase itself is not in Scripture; Augustine and later theologians coined it. The teaching is: Genesis 3 describes the fall, Psalm 51:5 speaks of being sinful from conception, and Paul builds the whole case in Romans 5.
Do all Christians believe in original sin?
Most do in some form, but the details differ. Catholics, Reformed and Lutheran churches speak of inherited guilt and corruption, Eastern Orthodox emphasise inherited mortality and brokenness, and some groups stress the nature but not the guilt.
Does baptism remove original sin?
Catholic teaching says baptism washes away original sin, which is why the Church baptizes infants. Most evangelical churches do not teach this. They hold that Christ's work, received by faith, is what answers sin, and baptism is the sign of that faith.
Are babies born sinful?
Scripture says we are sinners from the start, but it never says infants who die are lost. Many Christians take comfort in David's words about his child in 2 Samuel 12:23 and in the mercy of God.
