My argument for Christian based law system is two step:
1. Only moral use for prison is violent theft, fraud, child abuse (includes selling minors drugs btw), assault, rape, murder or attempts thereof. All other acts are nonviolent and should be dealt with a whole of host of nonviolent and creative social solutions and actions.
2. In an ideal world that goes beyond the scope of our current prison system, we would make petty theft (involving no violent threats, weapons, or systematic fraud on a grand scale) restitution based where victims can have the choice to work out a mercy repayment system over jail time and criminal records.
Also, for violent crimes like rape and murder, we’d clean up the prison system model to not be so dehumanizing and permissive of prison violence.
This two step model can be accomplished with a limited, low tax local government based model in the near term. And in a long view, accomplished even more effectively in a private property based law system wherein communities set voluntary contracts as offerings to would be members looking to live there with terms, conditions, and city wide associations and/or insurance firms providing subscription style models for security from theft and violence and justice meditations and facilities or spaces for violent persons to be placed.
A voluntary covenant-based community can set rules for excommunication from the property if you attempt murder. Since surrounding private property-based communities would not want random murderers cast into their communities, there would be agreements between said communities to guarantee safety from marauding murderers. A network of these agreements would develop so that the portions of land such persons would be able to inhabit would be islands or walled off tracts of land cooperatively owned by communities and voluntarily funded to protect society from psychopaths.