I'm not sure if you are accusing me of adultery or if you think that the civil magistrate should never use capital punishment.
Your reference is to Jesus' encounter with the woman caught in adultery is fraught with problems in your application, if your application is either no penalty for adultery or no capital punishment. First those who brought her to Jesus were not the civil magistrate nor her husband, so their standing was not correct. Second not explicitly stated but understood from the text the accusers were guilty of the same crime and probably with the very adulterous they accused.
Jesus' mercy toward her, reflects eternal justice, it is a separate matter from civic justice on earth. I certainly hope that you do not think Jesus is kosher with adultery, the entirety of scripture uses the term as a most heinous sin and profound evil.
I contend that if the sin of adultery is recategorized as a criminal offense, that a.) it will not eliminate the crime, b.) it will clog the already clogged courts, and c.) do nothing to improve the moral climate.
The place to fight adultery and other moral threats to the family structure is in church, with strong Biblical values taught to our children, and admonishment to those adults (whoever they might be) to repent and mend their ways if they have committed such offenses.
Taking those sinners into court and determining whether or not they should be stoned or even executed, is not the way to clean up our moral cesspool as it exists in society today. It begins at home, in the heart, and on our knees.
You appear to have confused what you call ‘civic justice’ with CRIMINAL justice, which is great, if you’re living in an Islamic country that is, and approve of Sharia law.