Sin

"Sin" is pronounced as /sɪn/. It sounds like "SIN" — one syllable.nounEveryday
Obvious
AI-compiled

Anything that falls short of God's goodness — wrong actions, attitudes, or the underlying human condition of being turned away from God.

What they actually mean

"Doing wrong — and, deeper than that, the bent toward wrong that everyone has."

Heard in the wild

We all struggle with sin.
a pastor, meaning everyone in the room including himself
That's not just a mistake, that's sin.
someone drawing a line between an error and a moral wrong

The Lighter Side

The thing everyone assumes you know the definition of. Ask three Christians and you'll get three definitions and one list, and the list will include something you did on Tuesday.

The longer version

What it means

Sin, in Christian teaching, has two layers. The obvious one is wrong actions: lying, cheating, cruelty, greed, and the rest. The deeper one is a condition: a bent away from God and toward self that every person is born with and can't fix on their own. Christians call the first "sins" (plural) and the second "sin" (singular, sometimes "the sin nature" or "original sin"). When a preacher says everyone is a sinner, he means the second layer — not that everyone has done something terrible, but that no one is naturally pointed the right way.

The word's root in both Hebrew and Greek means "to miss the mark" — an archery image. Sin is falling short of the target, not just breaking a rule.

Why people say it

Because the whole Christian story depends on it. If nothing is wrong with people, Jesus is unnecessary. Christians name sin not because they enjoy guilt but because they believe it's the accurate diagnosis, and that a right diagnosis is what makes the cure make sense. That's why a Christian can say "I'm a sinner" without despair: the sentence is usually followed, spoken or unspoken, by "and I'm forgiven."

How to respond

If a Christian calls something you did a sin, they're using their moral vocabulary, and you're free to disagree. If they call themselves a sinner, they're not fishing for reassurance; "aren't we all" is a fine reply, and they'll probably laugh. Don't assume that someone who talks about sin is judging you. In the church, the most frequent target of the word is the speaker.

If you hear it in different churches

Universal, with different emphases. Catholics distinguish mortal sin (serious, deliberate, breaks the relationship with God) from venial sin (lesser) and have the sacrament of confession for dealing with both. Orthodox Christians tend to describe sin more as sickness than crime — a wound needing healing. Reformed and evangelical churches stress the depth of the condition ("total depravity"). All agree on the two layers.

Where does “Sin” come from?

The Hebrew chata and Greek hamartia both mean to miss a mark or go astray. Sin first appears by name in Genesis 4:7, where God warns Cain that "sin is crouching at your door." Paul's summary in Romans 3:23 — "all have sinned and fall short of the glory of God" — is the verse most often quoted. The doctrine of original sin, that the human condition itself is fallen from birth, was developed by Augustine in the 400s from Romans 5 and Psalm 51:5 and shaped all of Western Christianity; the Eastern church holds a related but softer view, "ancestral sin."

Romans 3:231 John 3:4Genesis 4:7Romans 7:15–20Psalm 51:5

Good to know

Christians use "sin" more comfortably than outsiders expect, and usually about themselves. "Sinner" is not an insult in church — it's a category everyone's in. If you hear "the sin of…" followed by something you do, that's a description of a moral category, not a personal attack, though it can feel like one.

You might also hear

Common questions

Is sin the same as breaking a rule?+

Rules are involved, but Christians would say sin is deeper — a turning away from God and from the good, of which rule-breaking is a symptom.

Do Christians think they're better than everyone else?+

The teaching says the opposite: everyone is a sinner, including them. Christians who act superior are, by their own doctrine, forgetting that.

What's original sin?+

The belief that humans are born with a bent toward sin — not guilty of anything yet, but not neutral either. Catholics, Orthodox, and Protestants describe it a little differently but all hold some version.

Further reading

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Written by Rev. Christopher D.F. Warrington, Ordained Minister, M.Div. · Updated September 2026

This entry was compiled with AI assistance and has not yet been reviewed by an ordained pastor.