The short answer: sin is anything that falls short of God's character and breaks His law: what we do, say, and think, and the good we leave undone. The Bible says "all have sinned and fall short of the glory of God" (Romans 3:23, ESV). Sin separates us from God and leads to death. The good news is that God dealt with sin Himself: Jesus died for our sins, and "if we confess our sins, he is faithful and just to forgive us" (1 John 1:9, ESV).
What the Bible Means by Sin
The Bible uses several pictures for sin. All of them describe a broken relationship with God, not just a broken rule.
- Missing the mark. "For all have sinned and fall short of the glory of God" (Romans 3:23, ESV). We were made to reflect God, and we fall short.
- Breaking God's law. "Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness" (1 John 3:4, ESV).
- Going our own way. "All we like sheep have gone astray; we have turned—every one—to his own way" (Isaiah 53:6, ESV).
- Leaving good undone. "So whoever knows the right thing to do and fails to do it, for him it is sin" (James 4:17, ESV).
Sin Starts in the Heart
Jesus taught that sin is deeper than behaviour. "For from within, out of the heart of man, come evil thoughts, sexual immorality, theft, murder, adultery, coveting, wickedness, deceit, sensuality, envy, slander, pride, foolishness" (Mark 7:21–22, ESV). In the Sermon on the Mount He traced murder back to anger and adultery back to lust (Matthew 5:21–28). The problem is not only what we do. It is what we love.
Where Sin Came From
God made the world good. Sin entered when the first humans chose to distrust and disobey Him (Genesis 3). "Therefore, just as sin came into the world through one man, and death through sin, and so death spread to all men because all sinned" (Romans 5:12, ESV). Every person since has been born into that brokenness and has added to it.
Who Has Sinned?
Everyone. "If we say we have no sin, we deceive ourselves, and the truth is not in us" (1 John 1:8, ESV). This levels the ground. No one comes to God as a good person looking for a reward. We all come as people who need mercy, including the person sharing the gospel.
What Sin Does
- It separates us from God. "But your iniquities have made a separation between you and your God" (Isaiah 59:2, ESV).
- It enslaves. "Truly, truly, I say to you, everyone who practices sin is a slave to sin" (John 8:34, ESV).
- It leads to death. "For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord" (Romans 6:23, ESV).
How God Deals With Sin
For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God.
That is 2 Corinthians 5:21, ESV. God did not ignore sin, and He did not leave us in it. Jesus, who never sinned, took our sin and its penalty on the cross. See why Jesus died on the cross.
Forgiveness is offered to anyone who turns to Him: "If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness" (1 John 1:9, ESV). And the forgiveness is complete: "as far as the east is from the west, so far does he remove our transgressions from us" (Psalm 103:12, ESV).
Is There a Sin God Will Not Forgive?
People often fear they have done something beyond forgiveness. Jesus did speak of blasphemy against the Holy Spirit (Mark 3:28–29), in the context of people who saw His work and persistently called it evil. Many pastors and teachers understand it as a settled, final rejection of the Spirit's witness to Jesus. If you are worried about your sin and want to come to Jesus, that desire is itself a sign you have not hardened your heart against Him. His promise stands: "whoever comes to me I will never cast out" (John 6:37, ESV).
What to Do About Your Sin
- Be honest. Call sin what God calls it. Do not rename it or excuse it (1 John 1:8).
- Confess it to God. Tell Him plainly. He already knows, and He is ready to forgive (1 John 1:9).
- Turn. Repentance is a change of direction, not just regret. See what repentance means.
- Trust Jesus. Rest on what He did, not on your promise to do better. See what grace means.
- Walk in the light with others. Tell a trusted believer and ask for prayer (James 5:16).
- Keep fighting. Believers still struggle, but sin no longer rules them. See how to resist temptation.
Talking About Sin on the Street
We do not lead with accusation. Most people already feel the weight of what they have done. We name sin honestly because the gospel makes no sense without it, and then we point straight to Jesus, who "came into the world to save sinners" (1 Timothy 1:15, ESV). The goal is never shame. It is rescue.
Common Questions
What is sin according to the Bible? Sin is falling short of God's glory (Romans 3:23) and breaking His law (1 John 3:4). It includes wrong actions, words, and thoughts, and failing to do the good we know we should (James 4:17).
Has everyone sinned? Yes. Romans 3:23 says all have sinned and fall short of the glory of God, and 1 John 1:8 says that if we claim to have no sin we deceive ourselves.
What are the consequences of sin? Sin separates people from God (Isaiah 59:2), enslaves (John 8:34), and leads to death (Romans 6:23). The same verse says the free gift of God is eternal life in Christ Jesus.
How can my sins be forgiven? Jesus died for our sins and rose again. Anyone who confesses their sins and trusts Him is forgiven and cleansed (1 John 1:9, 2 Corinthians 5:21). Forgiveness is a gift of grace, not something earned.
Honest about sin. Certain about the Saviour.
