For a member of the Catholic Church, committing a mortal sin causes “eternal punishment,” involving eternal separation from God and suffering in hell. (The Catholic Church also teaches that under normal circumstances those who have not been baptized by either the Roman Catholic Church or another church teaching baptismal regeneration are also condemned to hell because the stain of original sin remains upon their souls.)
Para sa isang miyembro ng Simbahang Katoliko, ang mortal na pagkakasala ay magdudulot ng "walang hanggang parusa" — kasama ang walang hanggang pagkahiwalay sa Diyos at pagdurusa sa impiyerno.