If you don’t think CCC#675 is in play right now, think again. We’ve reached the point where the Vatican is attempting to deflect from the infestation of moral decay within the episcopate by publishing heresy in the Catechism. This is the Antichurch in ascendancy.
The death penalty is not unjust, it is just. It is not unmerciful, it is merciful. It is a means of repentance, forgiveness, and salvation. It forces the penitent (that’s why it’s called a ‘penitentiary’) to reflect more deeply on his sins as his time draws near, and hopefully experience a conversion. Justice demands this. Failing to dispense proportional punishment for a criminal act, is itself a criminal act. But for someone who doesn’t believe in the supernatural, doesn’t believe in the eternal life of the soul, none of this makes sense.
Anyway, I’m short on time, and Ann has already put up a bunch of proofs from Doctors or the Church and others. The title quote is from the brilliant John Senior, whom I’ve quoted many times on this site. Read it all HERE.