Catholic Dictionary

Term

UNPARDONABLE SIN

Definition

Post-biblical term that means blasphemy against the Holy Spirit. When the Pharisees, baffled by a miracle that Jesus had perfromed, accused him of using the power of the devil to accomplish it, he warned them, "Let anyone speak against the Holy Spirit and he will not be forgiven either in this world or in the next" (Matthew 12:22-32). also used as a synonum for the sin of despair.