Short answer
Sin is anything that fails to conform to God's holy character or violates His commands — in thought, word, action, or attitude. It includes both doing what God forbids and failing to do what He requires. Every person is born with a sinful nature and needs a Savior.
What Scripture says
"For all have sinned and fall short of the glory of God."
"Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness."
"So whoever knows the right thing to do and fails to do it, for him it is sin."
"For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord."
Going deeper
Sin is more than breaking rules — it is a rupture in our relationship with God. The Bible defines it as 'lawlessness' (1 John 3:4) and 'falling short of the glory of God' (Romans 3:23). At its root, sin is exchanging the Creator for created things, choosing our way over His, and refusing to love God with all we are.
Sin shows itself in two ways. There are sins of commission — doing what God forbids (lying, stealing, lust, hatred, greed). And there are sins of omission — failing to do what God requires (loving neighbor, helping the needy, worshiping the Lord, telling the truth). Even our best deeds, when done apart from God, fall short.
The Bible also teaches that sin is more than individual choices — it is a condition we are born into. We sin because we are sinners by nature, descended from Adam (Romans 5:12). This is why moral effort alone cannot solve our deepest problem; we need a new heart, not just better behavior.
Sin matters because God is holy and sin separates us from Him. Its wages are death — physical, spiritual, and eternal. But the same Bible that diagnoses our condition announces the cure: Jesus Christ. He bore our sins on the cross so that all who trust in Him are forgiven, cleansed, and made new.
Key takeaways
- Sin is anything that violates God's character or commands, by act or omission.
- It is both a condition we are born into and choices we make.
- All people are sinners and stand guilty before a holy God.
- The penalty of sin is death — but God offers eternal life through Jesus.
- Christ's death and resurrection are the only sufficient answer to sin.
A prayer
Holy God, I confess I am a sinner — in nature and in action. Thank You for sending Jesus to bear my sin. Forgive me, cleanse me, and give me a new heart that loves what You love. Amen.
Read the full passages
Every scripture cited above, opened for reading and study in context.