As far as that person receiving Jesus, that is really between him and the Lord, not the state.
What has already been paid for is our "debt" to God. Like I said, that does not mean you don't have to suffer the physical consequences of your sin.
I think you are confusing spiritual death, or the second death, meaning hell for eternity and physical death, the first death, that relates to our bodies.
Like some other poster quoted, "But if you do evil, be afraid; for he does not bear the sword in vain; for he is Gods minister, an avenger to execute wrath on him who practices evil" (Ro. 13:4).
Crime is not sin. It is a mistake to equate them I think.
Do you think of all crimes as not deserving punishment, or just capital crimes?