From my experience in prison ministry I can say that this whole topic is a very heart wrenching one. We deal with human beings who have gone wrong and who have committed all kinds of at times very bad things against others, be it adults or children. The question is: Why? Why does someone commit a certain crime? And if it is not drug related, why does someone steal, kill and destroy? Does that ring a bell?
Look at what St.Paul has to say in this regard. He says to the Ephesians (Eph.2:1-5; emphasis added)
" And you hath he quickened, who were dead in trespasses and sins;
2. Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience: 3. Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.
4. But God, who is rich in mercy, for his great love wherewith he loved us,
5. Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;) ..."
If we as a nation do not support the things of God and of His Christ, then we are helpers of what St.John calls "antichrist" in his letters (1.John 2:22 and 4:3 and 2.John 1:6-7). If we do not acknowledge Jesus Christ as the incarnate Son of God and do not teach and train our society, adults and children, in His precepts, then we cater to the lawless one and you are free to call it whatever you want.
In any case, we then not only open the door to demons, but we also reap what we - as a corporate body of a people - sow.
Although we are all born sinners, nobody is born a murderer, nobody is born a rapist, nobody is born a thief or a robber, but ask yourself, what was missing in such a person's life that they became that criminal?
Look at Moses, for a moment. Moses was a murderer. He killed a person in cold anger. Why? Because he saw another human being suffer. Because he was confronted with the evil of an un-Godly society. If they had brought moses to justice for his crime, well, thank God He had other plans. But, what I am saying is, if they had brought moses to justice and killed him in revenge, that would not have changed the Egyptian un-Godliness.
Killing offenders with the death penalty is like treating symptoms of a disease rather than taking care of its root cause.
As long as we are Christians we have the ministry of reconciliation - reconciling people to God. But for a non-Christian society and government and judicial system, this mandate does not apply.