First, I think we have to remember that all those pages and pages of death penalties in Leviticus and Deuteronomy came to us third hand at best. We're not at all sure they were written by Moses, much less God. And they also prohibited killing other human beings. But think about it. But killing a guilty person sends them to hell.
Capital punishment deprives a person of the opportunity to repent.
But Christ died for all humankind. His purpose was to save everyone. Here in Florida, we're on a roll. We have one after another lined up in death row, waiting for their turn in Old Sparky. Pope John Paul II has said that capital punishment may at one time have been necessary to protect the members of society from violent criminals.