I notice that you have delivered this spiel with any regard whatsoever to Scripture.If you do not understand that type of "restorative justice", then perhaps I can help a bit. This type of justice (in secular practice) does not necessarily have in focus what is best for the criminal. It does not eliminate punishment. In society it has in mind society itself. In terms of divine justice it has in mind the holiness, sovereignty, will and plan of God. God is not bound by the Law to inflict certain punishments, but rather to act justly given the circumstance. Under restorative justice when one truly repents God is faithful to forgive. Retributive Justice demands a punishment for a crime itself - an "eye for an eye". A man may truly repent but God will not forgive except that punishment be rendered (directed at the sin, not the sinner who committed the sin, if a substitute takes that punishment).
Let me quote. Proverbs 17:15 to you again. 'He who justifies the wicked and he who condemns the just are both of them alike an abomination to the LORD.' So God is bound to punish sin. That is why the Lord Jesus had willingly to be 'made sin,' for otherwise God could not punish Him.
God is bound to do both those things.God is not bound by the Law to inflict certain punishments, but rather to act justly given the circumstance.
As you have written it here, this is pure Romanism. One undergoes the sacrament of confession, possibly is given a penance to do, and Hey Presto! One is forgiven; Christ does not come into it. But in fact it is only by the suffering and the shed blood of Christ that we can be forgiven at all.Under restorative justice when one truly repents God is faithful to forgive.
Didn't I see that in the Bible somewhere? No, I can't have done; you say there is no retributive justice in the Bible. yet here it is-- Exodus 21:24 etc.Retributive Justice demands a punishment for a crime itself - an "eye for an eye".

But, you say, what about Matthew 5:38? This is the law for Christians: we who have been forgiven so much through the penal substitution of Christ for our sins, and who are born again of the Spirit of God, leave judgement to Him. 'For it is written, "Vengeance is mine, I will repay," says the Lord (Romans 12:19). Retributive justice is God's prerogative.
This is a very serious libel upon the Lord and, again, you may wish to reconsider it. '....That repentance and remission of sins should be preached in [Christ's] name to all nations....' (Luke 24:47). True [godly-- 2 Corinthians 7:10) repentance is a turning away from sin and towards Christ and is actually a gift of God (Acts 11:18). To say that God may not forgive such repentance is a dreadful falsehood against Him. But of course, such repentance and forgiveness is only made possible by the atoning death of Christ. 'Behold the Lamb of God who takes away the sin of the world.'A man may truly repent but God will not forgive except that punishment be rendered (directed at the sin, not the sinner who committed the sin, if a substitute takes that punishment).
Your claim that 'retributive justice' does not have regard to the person but the sin is also quite wrong. Here we go again: 'He who justifies the wicked [person] and he who condemns the just [person] are both of them alike an abomination to the LORD.'
Psalm 5:6. 'You shall destroy those who speak falsehood; the LORD abhors the bloodthirsty and deceitful man.' It is not only the bloodthirstiness and deceit that God abhors, but the people as well (c.f. also Proverbs 6:16-19. It is not only the lies that God hates, but the false witness who speaks them etc.).