Murder is a grave, mortal sin, a direct violation of the Fifth Commandment and God’s ownership of life, considered worse than lesser sins due to its profound attack on human dignity and community. It involves the willful, intentional taking of an innocent human life, which is always forbidden, though justifiable homicide (like just war or legitimate self-defense under strict conditions) is distinct from murder. The Catechism calls murder a sin that “cries out to heaven,” encompassing not just killing but also homicide, abortion, euthanasia, and neglect of the vulnerable.
Illustration by: Colton Rompala