The Koran says "Kill the Hypocrites". Modern Leftwingtardism isn't really different than that.
Here's your problem with capital punishment ~ only few are chosen. Almost without exception these are hard core stone cold sociopathic killers.
If you keep them around in a prison population long enough they'll kill again ~ maybe a guard, a fellow prisoner who is a white collar criminal, a visitor or maybe some other category of person.
It's statistically demonstrable that this happens.
When you execute these guys they don't kill again. If you tarry, a certain fraction ~ a very large fraction ~ will kill.
You may have thought you were escaping the knowledge of some specific person being put to death by opposing an execution, but all you've done is trade the killer for another victim you probably don't know and will never hear about, nor care about.
This bifurcated reality behind execution leaves Christians with a choice ~ kill a known killer or by keeping such a killer around kill an unknown stranger later on.
Which is the morally superior position? Think about it like that.
“Here’s your problem with capital punishment ~ only few are chosen.”
Actually the victims of capital punishment are volunteers, not chosen.