1What is sin?
Sin is the deliberate transgression of God's law and the rejection of His order of love (1 Jn 3:4). It wounds the soul and distorts reason, leading man to prefer the creature to the Creator. The gravity of sin depends on its matter, knowledge, and consent.
Mortal sin destroys sanctifying grace and ruptures communion with God. Venial sin weakens charity but does not break it entirely. Both must be confronted, for tolerance of venial sin leads to mortal sin through spiritual indifference.
Sin is not merely psychological imbalance or social defect. It is a real offense against the holiness of God. Its remedy lies not in therapy or social reform but in repentance and sacramental absolution. Only through Christ's sacrifice and the application of His merits can guilt be removed and the sinner restored to life.