In Catholicism, sin is defined as an offense against reason, truth, and right conscience . It is an intentional thought, word, deed, or omission contrary to God's eternal law. More than just breaking arbitrary rules, sin is viewed as a failure in genuine love for God and others, which fractures relationships and damages the human soul. [ 1 , 2 , 3 ] The Catholic Church categorizes sin into two primary types depending on its severity: Mortal Sin Definition: A grave violation of God's law that turns a person completely away from God. Three Conditions: To be considered mortal, the act must involve grave matter (serious offense, such as murder or adultery), be committed with full knowledge that the act is sinful, and require full consent of the will. Effect: It destroys the life of grace (charity) within the soul. If left unabsolved, it separates a person from God for eternity. Remedy: It requires the Sacrament of Reconciliation (Confession) to be forgiven. [ 1 , 2 , 3 , 4 ...