Sin

What Is Sin?

Sin is an offense against God. It is a thought, word, action, or omission that is contrary to God’s law and His loving plan for our lives.

Sin damages our relationship with God, harms ourselves, and often hurts others.

God created us for love and holiness. Sin is a rejection of that love.

“Whosoever committeth sin committeth also iniquity; and sin is iniquity.” — 1 John 3:4

Why Does Sin Matter?

Sin is not merely breaking a rule.

Sin wounds our relationship with God and weakens our ability to love.

Every sin moves us away from the life God desires for us and away from the happiness found in communion with Him.

The Origin of Sin

God created humanity good and gave human beings freedom.

Through the sin of our first parents, Adam and Eve, sin entered the world.

This first sin is called Original Sin.

Because of Original Sin, humanity experiences a wounded nature and an inclination toward sin, though human beings remain capable of choosing what is good through God’s grace.

Mortal and Venial Sin

Mortal Sin

Mortal sin destroys charity in the soul and seriously damages our relationship with God.

For a sin to be mortal, three conditions must be present:

• Grave matter.
• Full knowledge.
• Deliberate consent.

Mortal sin can be forgiven through sincere repentance and the Sacrament of Confession.

Venial Sin

Venial sin wounds our relationship with God but does not destroy it.

Although less serious than mortal sin, venial sin should not be ignored because it weakens the soul and can lead to more serious sin.

Sins of Commission and Omission

Commission

A sin of commission is doing something that we should not do.

Omission

A sin of omission is failing to do something that we should do.

Christians are called not only to avoid evil but also to actively do good.

The Effects of Sin

Sin affects every aspect of life.

• It weakens our relationship with God.
• It harms our relationship with others.
• It clouds our judgment.
• It weakens virtue.
• It can lead to further sin.

Sin promises happiness but ultimately leaves the soul restless and wounded.

Christ Came to Save Us From Sin

The heart of the Gospel is that God did not abandon humanity to sin.

Jesus Christ came to save us.

Through His death and Resurrection, Christ conquered sin and opened the way to forgiveness and eternal life.

“For the Son of man is come to seek and to save that which was lost.” — Luke 19:10

Repentance and God’s Mercy

No sinner is beyond God’s mercy.

God continually invites us to repentance, conversion, and reconciliation.

Through prayer, sincere sorrow, and especially the Sacrament of Confession, we receive God’s forgiveness and healing.

God’s mercy is greater than any sin when we turn back to Him with sincere hearts.

How Do We Fight Sin?

Christians combat sin through God’s grace.

• Prayer.
• The Sacraments.
• Reading Scripture.
• Acts of charity.
• Growth in virtue.
• Regular examination of conscience.

Holiness is not achieved by human strength alone but through cooperation with God’s grace.

Common Misunderstandings

Sin Is More Than Breaking Rules

Sin is ultimately a failure to love God and neighbor as we should.

Everyone Struggles With Sin

The Christian life involves continual conversion and growth.

God’s Mercy Is Greater Than Our Sin

No one should despair of God’s forgiveness when they sincerely repent.

Love Requires Truth

Calling something sinful is not condemnation of a person. God reveals moral truth because He loves us.

Key Truths About Sin

• Sin is an offense against God.
• Sin damages our relationship with God and others.
• Original Sin wounded human nature.
• There are mortal sins and venial sins.
• Sin can occur through action or omission.
• Jesus Christ came to save us from sin.
• God offers forgiveness through repentance and Confession.
• God’s mercy is greater than any sin.

What Does This Mean For Me?

Every person struggles with sin.

The good news of the Gospel is not that we are perfect, but that God is merciful.

Christ invites you to trust His mercy, seek forgiveness, and continue growing in holiness.

No matter how many times you fall, God calls you to rise again and follow Him.

Explore the Moral Life

Continue Learning

Now that you understand sin, the next topic is: Conscience

Learn how God helps us recognize right and wrong and make moral decisions.