According to your religion or morality: how can we best regulate murder and destruction?

Murder and destruction when view in my believe , as according to my  religion and its morality are the work of satan , since satan declare itself to be arch enemy of mankind , so satan would do its worse to snare and deceive mankind to kill another human unjustly, as called murder , then further on to instigate mankind to become enmity, from one country to  another,  to the extent that they start warring each other and expand the killing out at the level of World Wars, as we witness both of the Two Last World Wars and the proxy wars that spread out in various regions of the world right now. The only solution of this is to create unity among mankind , under the the teaching of the only religion of GOD , send down for all mankind from the beginning till the last hour comes. Since this only religion of GOD, promote mankind to be the Middle Nation and the Best Nation on earth , by performing all goodness and forbid them from all evils . So we should start off this Holy Mission by praying to GOD that ,Oh GOD please bestows upon us the goodness of this world and the goodness in the here after world and please protect us from the evils of the damn satan.

Execute murderers.  That way they can't repeat their crime.

WE HAVE LAWS FOR THOSE SITUATIONS...WE HAVE POLICE DEPARTMENTS.

Every religion worth investigating has SOME form of the Social Contract in their core beliefs. "Do not treat others in any way which you would not ALSO want to be treated."   This would cause people to refrain from mucking about with other people's belongings, and refrain from sticking a thumb into another person's eye, or from sticking ANY body part, uninvited, into ANY orifice.

Keep it illegal, improve mental health services

LORD HAVE MERCY!

"No one is good but the Holy Ghost" (Mark 10:18).

How can a man be "good" enough to "regulate murder and destruction" when "man is evil continuously" (Genesis 6:5)?

That's PRECISELY what happened under the First Covenant, man's righteousness (Isaiah 64:6) couldn't keep His commandments (Hebrews 8:7).

Christianity is about being "baptized into One Spirit" (I Corinthians 12:13) so "the Spirit of Christ can dwell in you" (Romans 8:9) as (((HE))) does the work" (Philippians 2:13) and

"We have the mind of Christ" (I Corinthians 2:16).

HOW?

How can you go wrong when "We have the mind of Christ" after we've "Joined to His Spirit" (I Corinthians 6:17) when "baptized into One Spirit" (I Corinthians 12:13)?

Today's Christians believe "we have to SHOW" and we have to..."

When "It is GOD working in us" (Philippians 2:13) and "not we ourselves" (Ephesians 2:9).

What did you die for  JESUS (Galatians 2:21) when today's Christians are still trying to (((DO))) by (((SHOWING))) with their "righteousnesses" that are only "filthy rags" (Isaiah 64:6)?

During the Christian era, this was 'regulated' by the Church in two primary ways. One was to establish a system of 'holy knights' essentially refereeing all warfare, protecting noncombatant women and children, preventing genocide, (total one-sided annihilation of tribes), and interdicting any trafficking or use of powerful new weapons that created these imbalances.

The second was the use of the monastic system to protect powerful new knowledge inside a structure where it would not fall into evil hands, which helped to prevent the invention and exploitation of deadly chemicals, 'super' weapons, and biological warfare. 

“Do not give what is holy to dogs, and do not throw your pearls before swine, or they will trample them under their feet, and turn and tear you to pieces." (Matthew 7:6).

That is the only known historical solution to widespread murder and destruction. The Biblically predicted 'Great Apostasy' (2 Thessalonians 2:3-4), that led to the advent of secularism and its inescapable arms race culminating in the advent of nuclear weapons has temporarily resulted in the holy system being 'taken out of the way' (2 Thessalonians 2:7), so mankind can see the clear difference between good and evil, then make one final decision regarding Christ's New Covenant of universal forgiveness and cross-tribal brotherhood.

Either way, the holy system will be reestablished as the Bible predicts, because humanity would not survive without it. Obviously, its new form will be significantly 'upgraded' to deal with the new looming threats and widespread evil. 

My religion is Christianity, and the best way to deal with people to stop them murdering in the first place is to show them by example the peace of God on those who lovingly obey Him, backing that up with words of truth about the one way God has enabled sinners to be freely forgiven and brought into His kingdom rule. It's exactly the same for those who are murderers. Point them to God's way to peace and a clear conscience. But only if God's Holy Spirit then convicts them of their sin and need to repent will they be turned around and transformed by grace.

The deed comes back three fold