Working definitions of mortal and venial sins could be these: Mortal Sin is “sin causing spiritual death,” and Venial Sin is “sin that can be forgiven.”
Ang kilalang kahulugan ng mortal at benyal na kasalanan ay maaaring: Mortal na kasalanan ay - kasalanan na nagdudulot ng kamatayang espiritwal", at Benyal na kasalanan ay "kasalanang napapatawad".