mortal sin

noun

Definition of mortal sin

:a sin (such as murder) that is deliberately committed and is of such serious consequence according to Thomist theology that it deprives the soul of sanctifying grace — compare venial sin 1

First Known Use of mortal sin

15th century


MORTAL SIN Defined for English Language Learners

mortal sin

noun

Definition of mortal sin for English Language Learners

  • in the Roman Catholic Church : a sin (such as murder) that will result in punishment that lasts forever unless the person who has sinned sincerely confesses to God and asks to be forgiven


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