List of Mortal Sins in Catholicism: A Comprehensive Guide

Understanding the list of mortal sins in Catholicism is crucial for every believer seeking to live a life in accordance with God's will. Mortal sins, also known as grave sins, are actions that seriously offend God and damage our relationship with Him.
- ✅ Complete List of Mortal Sins and Examples
- Types of Mortal Sins
- Consequences of Mortal Sins
- Repentance and Forgiveness
- Importance of Avoiding Mortal Sins
- What are the seven deadly sins?
- What is the difference between a mortal sin and a venial sin?
- What are the consequences of committing a mortal sin?
- How can I be forgiven for a mortal sin?
- How can I avoid committing mortal sins?
✅ Complete List of Mortal Sins and Examples
| Category | Mortal Sin | Examples |
|---|---|---|
| 1. Against God | Blasphemy | Insulting or mocking God, Jesus, Mary, or the saints |
| Idolatry | Worshipping false gods, astrology, occult practices | |
| Sacrilege | Profaning sacred things, receiving Communion in a state of mortal sin | |
| Atheism / Apostasy | Denying God, leaving the Christian faith deliberately | |
| 2. Against Faith & Worship | Missing Sunday Mass (without valid reason) | Skipping Mass due to laziness, sports, etc. |
| Desecration of the Eucharist | Throwing away or disrespecting consecrated hosts | |
| Occult practices | Consulting mediums, witchcraft, tarot, horoscopes | |
| 3. Against Life | Murder | Killing an innocent person |
| Abortion | Procuring or assisting in the killing of an unborn child | |
| Euthanasia | Deliberately ending a person’s life to relieve suffering | |
| Suicide | Taking one's own life (with full consent and understanding) | |
| Hatred | Wishing grave harm or death on another with full consent | |
| 4. Against Sexual Morality | Fornication | Sexual activity between unmarried people |
| Adultery | Sexual relations with someone not your spouse | |
| Homosexual acts | Sexual acts between people of the same sex (distinct from orientation) | |
| Masturbation | Deliberate self-stimulation for sexual pleasure | |
| Pornography | Viewing, producing, or distributing explicit content | |
| Contraception | Using artificial birth control methods | |
| Incest, bestiality, rape | All forms are grave sexual offenses | |
| 5. Against Others (Justice & Charity) | Theft (serious) | Stealing something of high value |
| Slander / Calumny | Lying to destroy someone’s reputation | |
| Envy | Deep resentment or desire for another’s success or possessions | |
| Refusal to forgive | Willfully refusing to forgive others | |
| 6. Against the Body (Gluttony & Substance Abuse) | Drunkenness (grave) | Drinking to the point of loss of reason or self-control |
| Drug abuse | Using illegal or harmful drugs for recreation | |
| Gluttony | Serious overindulgence in food or drink | |
| 7. Against Marriage & Family | Divorce (with remarriage) | Leaving a valid marriage and marrying another without annulment |
| Child neglect or abuse | Failing in parental duties or harming children | |
| 8. Against Society | Corruption | Bribery, fraud, abuse of power |
| Scandal | Leading others to sin deliberately (e.g., encouraging immorality) | |
| Exploitation | Using others for personal gain (e.g., human trafficking) |
Types of Mortal Sins
The Catechism of the Catholic Church identifies seven types of mortal sins, commonly referred to as the "seven deadly sins":
- Pride: Excessive love of self, seeking one's own glory rather than God's
- Covetousness: Excessive desire for material possessions
- Envy: Sadness or resentment at the success of others
- Wrath: Uncontrolled anger or rage
- Lust: Uncontrolled sexual desires or actions
- Gluttony: Excessive consumption of food or drink
- Sloth: Laziness or apathy
Consequences of Mortal Sins
Mortal sins have grave consequences for our spiritual well-being:
- Separation from God: They break our relationship with God and deprive us of His grace.
- Spiritual Harm: They damage our souls, making us more vulnerable to further sin.
- Eternal Punishment: Unrepented mortal sins can lead to eternal punishment in hell.
Repentance and Forgiveness
Despite the seriousness of mortal sins, God offers forgiveness through the sacrament of reconciliation. By confessing our sins to a priest, we receive absolution and are restored to God's grace. However, true repentance and a genuine desire to change are essential for forgiveness.
Importance of Avoiding Mortal Sins
Avoiding mortal sins is vital for our spiritual health and eternal salvation. By doing so, we:
- Maintain a Strong Relationship with God: We keep our hearts open to His grace and love.
- Protect Our Souls: We prevent spiritual damage and safeguard our salvation.
- Avoid the Risk of Eternal Punishment: We reduce the likelihood of facing the consequences of unrepented mortal sins.
Understanding the list of mortal sins is a valuable tool for every Catholic striving to live a virtuous life. By recognizing and avoiding these grave offenses, we can strengthen our relationship with God, protect our souls, and work towards eternal salvation.

What are the seven deadly sins?
The seven deadly sins are pride, covetousness, envy, wrath, lust, gluttony, and sloth.
What is the difference between a mortal sin and a venial sin?
A mortal sin is a grave sin that destroys charity in the heart of the person who commits it and turns him away from God. A venial sin is a less serious sin that does not destroy charity but weakens it.
What are the consequences of committing a mortal sin?
The consequences of committing a mortal sin are separation from God's grace, spiritual harm, and the risk of eternal punishment.
How can I be forgiven for a mortal sin?
Mortal sins can be forgiven through the sacrament of reconciliation, also known as confession. Through this sacrament, the sinner confesses his or her sins to a priest, receives absolution, and is restored to God's grace.
How can I avoid committing mortal sins?
To avoid committing mortal sins, it is important to:
- Pray regularly
- Attend Mass
- Receive the sacraments
- Read the Bible
- Follow the teachings of the Church
