Part 7 · Deep dive
The hard questions
Twelve honest questions answered at length, with where traditions differ and what the early church said.
These are the questions people most often ask once they start thinking seriously about sin. Each answer starts with what Scripture says clearly, then shows where Christian traditions differ, and finally what the early church taught.
Twelve questions
1. Are we born sinful?
Scripture teaches that Adam's sin brought death and a broken condition to all humanity (Romans 5:12–19), and David speaks of sin from his conception (Psalm 51:5). Yet Ezekiel 18:20 insists each person bears responsibility for his own sins. Christians agree we are born into a fallen condition; they describe what is inherited differently.
Paul's point in Romans 5 is that humanity shares a story: what Adam did affected everyone, and what Christ did can affect everyone too. Ezekiel 18 keeps us from using that as an excuse: each person still answers for their own choices. All traditions baptize infants or dedicate children partly because they see this shared condition as real from birth.
Scripture
Where traditions differ
Catholic
Original sin is a deprivation of original holiness and justice, passed to all; it is not a personal fault, and it is washed away in baptism, though an inclination to sin remains (CCC 404–405).
Orthodox
Prefers "ancestral sin": we inherit mortality and a wounded, corrupted nature from Adam, but not Adam's personal guilt.
Protestant
Reformation churches generally teach inherited guilt and corruption ("total depravity" in the Reformed tradition): every part of human nature is affected by sin.
The early church
The early church · 2nd–5th centuries
Irenaeus (c. 180) saw Christ as the new Adam who "recapitulates" and heals what Adam lost. Augustine (c. 400) developed the Western teaching of inherited guilt; Eastern fathers such as Cyril of Alexandria stressed inherited corruption and death.
2. Is temptation itself a sin?
No. Jesus "faced all of the same testings we do, yet he did not sin." Temptation becomes sin when the desire is welcomed and acted on (James 1:14–15). God also promises a way of escape.
Hebrews 4:15 is the key: Jesus was tempted in every way, yet without sin. So temptation itself cannot be sin. The question is what we do next. Paul adds that God provides a way out, so no temptation is irresistible.
Scripture
The early church
The early church · 2nd–5th centuries
The desert fathers taught that a passing thought is not sin; sin begins when we linger on it, consent to it, and act.
3. Are all sins equal?
Every sin separates us from God and needs grace (James 2:10). But Scripture also recognizes that some sins are graver than others (John 19:11) and speaks of "sin that leads to death" and sin that does not (1 John 5:16–17).
James 2:10 shows that the Law is one whole: breaking any part makes us a lawbreaker. But Jesus tells Pilate that the one who handed Him over had 'the greater sin', and the Law itself gave different penalties for different wrongs. So all sin needs grace, but not all sin does equal damage.
Scripture
Where traditions differ
Catholic
Distinguishes mortal sin (grave matter, full knowledge, deliberate consent; it breaks communion with God) from venial sin, which wounds but does not break it (CCC 1854–1864).
Orthodox
Recognizes degrees of sin and treats sins as illnesses of varying seriousness, but avoids a fixed legal classification.
Protestant
Most hold that any sin deserves judgment and is covered by Christ, while acknowledging that some sins do greater harm and carry heavier consequences.
4. Can we sin without realizing it?
Yes. The Law provided sacrifices for unintentional sins, and David prays to be cleansed from "hidden faults." Growing in faith often means seeing sins we once missed.
Leviticus 4 sets out offerings for sins done 'unintentionally', which means Israel knew people can do wrong without realizing it. Psalm 19:12 asks to be cleansed from hidden faults. Growing closer to God usually brings more awareness of sin, not less, the way more light shows more dust.
Scripture
5. Why does God allow sin?
Scripture never gives a complete explanation, but it shows that God created beings truly free to love Him, that He is not the author of evil (James 1:13), and that He can bring good even out of evil (Genesis 50:20; Romans 8:28), above all at the Cross.
Scripture gives no full answer, but some things are clear: God is not the author of evil, real love requires real freedom, and God works even through evil for good. Joseph's words to his brothers, and above all the Cross, show God bringing the greatest good out of the worst evil.
Scripture
The early church
The early church · 2nd–5th centuries
Augustine taught that evil is not a thing God made but the absence or twisting of good. Irenaeus saw human history as God patiently raising humanity to maturity.
6. What is the relationship between sin and the Law?
The Law is holy and good, but it reveals sin rather than curing it. Sin even uses the commandment to stir up rebellion. What the Law could not do, God did by sending His Son and giving the Spirit.
Paul defends the Law as holy, righteous and good (Rom 7:12). The problem is not the Law but Sin, which uses the commandment to provoke. The Law works like an X-ray: it shows the break but cannot set it. Christ and the Spirit do what the Law could not.
7. Can a Christian become enslaved to sin again?
Paul warns believers not to offer themselves to sin again, because we become slaves of whatever we obey. Peter warns that returning to the old life can leave a person worse off. But freedom remains available in Christ.
Romans 6 warns believers not to let Sin reign again. Galatians 5:1 urges them to stand firm in freedom. The traditions answer differently whether salvation can be lost, but all agree the remedy for falling is the same: return in repentance.
Scripture
Where traditions differ
Catholic
A believer can lose sanctifying grace through mortal sin and be restored through repentance and the sacrament of Confession.
Orthodox
Salvation is a lifelong path; one can fall away and return through repentance and Confession.
Protestant
Reformed traditions teach that true believers will persevere, though they can fall into serious sin; Wesleyan and others hold that a believer can fall from grace.
8. What is the unforgivable sin?
Jesus spoke of blasphemy against the Holy Spirit after religious leaders called the Spirit's work in Him the work of Satan (Mark 3:22–30). It is commonly understood as a hardened, final rejection of God's grace. Anyone worried that they have committed it shows by that very concern that their heart has not hardened.
The setting matters: Jesus' opponents saw Him cast out demons by the Spirit of God and called it Satan's work. It is a deliberate, hardened refusal of the very Spirit who brings people to repentance. That is why it 'cannot be forgiven': it refuses forgiveness itself.
Scripture
The early church
The early church · 2nd–5th centuries
Augustine described it as final impenitence: persisting in refusing God's mercy until death.
9. Does repeated sin mean repentance isn't real?
Not necessarily. Paul describes ongoing struggle (Romans 7:15–25), and John says Christ is our advocate when we sin. But genuine repentance includes a real desire and effort to change, and Scripture warns against a settled pattern of sin.
Romans 7 describes a real struggle: wanting to do right and failing. Christians have long debated whether Paul describes life before or after faith, but either way, the honest struggle itself is a sign of life. 1 John 3 warns against a settled, unconcerned pattern of sin, not against stumbling.
Scripture
10. What's the difference between godly sorrow and shame?
"Godly sorrow brings repentance that leads to salvation, without regret, but worldly sorrow brings death." Godly sorrow turns us toward God and hope; worldly sorrow and shame turn us inward, toward hiding and despair, like Adam and Eve in the garden, or Judas compared with Peter.
Godly sorrow looks at God and says 'I have wronged You; help me.' Worldly sorrow looks at self and says 'I am ruined.' The first leads to life, the second to hiding or despair. Peter shows the first, Judas the second.
11. How did Christ's death deal with sin?
The New Testament uses several images together: a sacrifice for sins (Hebrews 9–10), a ransom (Mark 10:45), reconciliation (2 Corinthians 5:18–21), victory over evil powers (Colossians 2:13–15), and Christ bearing our sins (1 Peter 2:24; Isaiah 53).
No single picture says everything, so the New Testament uses many: sacrifice, ransom, reconciliation, victory and substitution. They are like facets of one gem. The early church held them together without choosing one as the master theory.
Where traditions differ
Catholic
Christ's death is a sacrifice of perfect love and obedience that makes satisfaction for sin and reconciles humanity to God (CCC 613–617).
Orthodox
Emphasizes Christ's victory over sin, death, and the devil (Christus Victor) and the healing of human nature by uniting it with God.
Protestant
Often emphasizes penal substitution: Christ bore the penalty for our sins in our place, alongside the other biblical images.
The early church
The early church · 2nd–5th centuries
Athanasius (On the Incarnation, c. 318) taught that the Word became flesh to undo death and corruption. Gregory of Nyssa and others stressed Christ's victory over the powers that held humanity captive.
12. What happens to sin in the resurrection and new creation?
Death, the last enemy, is destroyed. God wipes away every tear and nothing evil enters the new creation. The work begun in us now will be completed, and we will be like Christ.
Paul calls death 'the last enemy' to be destroyed. Revelation pictures a city where nothing unclean enters and God wipes away every tear. The work God begins in us now He promises to finish, and we will be like Christ when we see Him as He is.
13. What does the Bible teach about judgment and hell?
Jesus Himself spoke most often about hell. He warned of 'eternal punishment' set against 'eternal life' (Matthew 25:46), of outer darkness, and of fire that is not quenched. Paul speaks of a day when God 'will judge everyone according to what they have done' (Romans 2:6) and of eternal separation from the Lord's presence (2 Thessalonians 1:9). The images differ, but the core is the same: to finally refuse God, the only source of life, is to lose life itself. God takes no pleasure in this (Ezekiel 33:11); He sent His Son so that whoever believes 'will not perish but have eternal life' (John 3:16).
Where traditions differ
Catholic
Hell is 'the state of definitive self-exclusion from communion with God' for those who die in unrepented mortal sin; its chief pain is eternal separation from God (CCC 1033–1037).
Orthodox
Often describes God's presence as the same fire experienced as light and joy by those who love Him and as torment by those who reject Him. The judgment is real and final.
Protestant
Historically affirms a final judgment and eternal punishment for those outside Christ, and stresses that salvation from it is by grace through faith in Christ alone.
The early church
The early church · 2nd–5th centuries
The early church taught final judgment with one voice. Ignatius (c. 110) warned of 'unquenchable fire'; Justin Martyr (c. 155) and Irenaeus (c. 180) spoke of eternal judgment; Irenaeus explained it as God respecting the choice of those who separate themselves from Him, the source of all good.
Original sin: one verse, two readings
Romans 5:12 ends: 'death spread to everyone, because everyone sinned.' The Greek is eph' hō pantes hēmarton. The early Latin translation Augustine used read in quo omnes peccaverunt, 'in whom (Adam) all sinned'. This small difference helped shape two ways of describing what we inherit from Adam.
What do we inherit from Adam?
Catholic
We inherit original sin: not personal guilt for Adam's act, but the deprivation of the original holiness and justice humanity was meant to have, along with a wounded nature inclined to sin (concupiscence). Baptism removes original sin, though the inclination remains (Catechism 402–406).
Orthodox
Usually speaks of 'ancestral sin': we inherit mortality and a weakened, sick nature, not Adam's guilt. Because we are mortal and fearful, we each sin personally. Reads eph' hō as 'because' all sinned.
Reformed and Lutheran
Adam acted as head of humanity, so his guilt is counted to all and our nature is corrupted throughout ('total depravity': not that we are as bad as possible, but that no part is untouched). Only grace can free the will.
Wesleyan / Methodist
Affirms inherited corruption but stresses 'prevenient grace', given to all, which restores enough freedom to respond to God.
Common ground
All agree: humanity is born into a fallen condition, every person sins, no one can save themselves, and Christ the second Adam is the only remedy.
The early church
Augustine of Hippo · c. 412–420 · On the Merits and Remission of Sins
Taught that all humanity was 'in Adam' and shares his guilt, which is why even infants are baptised for the remission of sins.
John Chrysostom · c. 391 · Homilies on Romans 10
Read Romans 5 as saying Adam's fall made all mortal, and through mortality inclined to sin; he did not teach inherited guilt in Augustine's sense.
Cyril of Alexandria · c. 430 · Commentary on Romans
Human nature 'became sick' with sin through Adam's disobedience, and so all were made sinners, not as sharing his transgression but as sharing his nature.
Respected commentary
Joseph Fitzmyer · 1993 · Romans (Anchor Bible)
A leading Catholic scholar who surveys eleven proposed meanings of eph' hō and concludes it most likely means 'with the result that' all sinned.
John Romanides · 1957 · The Ancestral Sin
An influential Orthodox study arguing that death, not inherited guilt, is the central inheritance from Adam in early Greek theology.
The unforgivable sin, in context
In Mark 3:20–30 Jesus has been freeing people from demons. Teachers from Jerusalem claim He does it by the power of Satan. Mark adds the key: Jesus spoke this 'because they were saying, "He's possessed by an evil spirit"' (3:30). The sin is calling the Spirit's work of mercy the devil's work, a settled refusal of the only One who can bring forgiveness.
It is unforgivable not because God's mercy has limits, but because it rejects the very means of mercy. A person can only be forgiven by accepting forgiveness.
The early church
Augustine of Hippo · c. 393 · Sermon 71
Defined it as final impenitence: hardness of heart persisting until death, refusing the forgiveness the Spirit gives in the Church.
Athanasius · c. 360 · Letter to Serapion IV
Explained it as attributing the divine works of Christ to Beelzebub, denying His divinity against plain evidence.
Pastoral consensus across traditions: those who are worried they have committed it have not, because their very concern shows the Spirit is still at work in them.
Hebrews 6 and 10: can a believer fall away?
Hebrews was written to Jewish Christians tempted, under pressure and persecution, to turn back from Christ to the old system of temple sacrifice (10:32–39). The warnings say: if you deliberately reject Christ's sacrifice, there is no other sacrifice to return to (10:26). The aim is to keep readers from drifting, not to frighten tender consciences.
How traditions read the warnings
Catholic and Orthodox
A baptised believer can truly fall away through mortal sin or apostasy, but can be restored through repentance; the early church debated, and then affirmed, that even apostates could return.
Reformed
True believers will persevere by God's grace; the warnings are one of the means God uses to keep them, or they describe people who tasted grace without being truly reborn.
Wesleyan and Arminian
Real believers can fall away by persistent unbelief, so the warnings are genuine; but grace is offered to all who return.
The early church
John Chrysostom · c. 403 · Homilies on Hebrews 9
Reads 'impossible to renew to repentance' as meaning impossible to be baptised a second time, not that repentance itself is closed to the fallen.
For further reading
Respected commentary
Catechism of the Catholic Church · 1992 · Paragraphs 385–421, 1846–1876
The official Catholic summary of teaching on the fall, original sin and the nature of sin.
Read the source →Kallistos Ware · 1963, rev. 1993 · The Orthodox Church
A clear introduction to Orthodox teaching, including ancestral sin and salvation as healing and theosis.
Cornelius Plantinga Jr. · 1995 · Not the Way It's Supposed to Be: A Breviary of Sin
A widely respected Protestant study describing sin as the vandalism of shalom, God's intended peace.
Westminster Confession · 1646 · Chapter VI
The historic Reformed statement on the fall, original sin and its effects.
Catechism of the Catholic Church · 1992 · Part 3, Article 8: Sin
Official Catholic teaching on mortal and venial sin, and the sacrament of Penance.
Read the source →Augustine · c. 421 · Enchiridion
A short handbook on faith, hope and love, with his teaching on evil as the absence of good.
Read the source →Athanasius · c. 318 · On the Incarnation
The classic early account of how Christ's death and resurrection overcome corruption and death.
Read the source →Going deeper: judgment and hell
The landing page answers this question briefly. Here are the main passages and how the church has read them.
What Jesus taughtMatthew 25:31–46; Mark 9:43–48; Luke 16:19–31
Matthew 25:31–46; Mark 9:43–48; Luke 16:19–31
Jesus speaks of the sheep and the goats, of 'eternal punishment' and 'eternal life' using the same Greek word (aiōnios), of the worm that does not die, and of a great chasm that cannot be crossed. He uses these warnings out of love, to turn people back before it is too late.
What Paul taughtRomans 2:5–16; 2 Thessalonians 1:6–10; 2 Corinthians 5:10
Romans 2:5–16; 2 Thessalonians 1:6–10; 2 Corinthians 5:10
Paul says 'we must all stand before Christ to be judged'. For those who reject God, the result is 'eternal destruction, forever separated from the Lord'. For those in Christ, judgment holds no condemnation (Romans 8:1).
Where traditions agree and differ
Shared
All three traditions confess in the Nicene Creed that Christ 'will come again in glory to judge the living and the dead'. Judgment is real, and this life's choices carry eternal weight.
Catholic
Distinguishes hell from purgatory, a final cleansing for those who die in God's friendship (CCC 1030–1037).
Orthodox
Does not teach purgatory; prays for the departed and speaks of the fire of God's love received as joy or as torment.
Protestant
Rejects purgatory; teaches that at death believers are with Christ and unbelievers await judgment.
The early church
Ignatius of Antioch · c. 110 · To the Ephesians 16
Warned that whoever corrupts the faith 'shall go into unquenchable fire'.
Read the source →Irenaeus of Lyons · c. 180 · Against Heresies V.27
Taught that separation from God is death, and that those who flee God's light by their own choice remain in the darkness they have chosen.
Read the source →Continue with
Theme
Justification and Salvation →
How God removes condemnation and declares sinners right with Him.
Theme
The Second Coming and the Day of the Lord →
Christ's return, the resurrection, and the final judgment.
Theme
Can a Believer Fall Away? →
Deep dive: 'once saved, always saved', God's eternal view vs our walk in time, the warnings of Hebrews, and how the traditions answer.
Key takeaways
- Scripture is clear on the main lines even where traditions differ in details.
- The early church is a shared starting point for all three traditions.
- Worry about having gone too far is itself a sign of a living heart.