1) Imperfect man is an imperfect vessel to administer perfect laws. It’s going to get screwed up somewhere and end up doing God a disservice.
2) Historical evidence to support that doubt. The Massachusetts colony and the civil administrations of Calvin and Zwingli left many ruined or dead. In the name of righteousness, many members of non-aligned groups (Moravians, Anabaptists, Quakers, etc) were persecuted in the name of a civil theocracy. Those theocrats were convinced they were administering God’s laws, when it was often their opinions that they were protecting.
The Law of God is very clear in most places. It's just people don't like what it says. How would it look like? Some examples:
For example - "Thou shall not murder."
But what if a thief comes into your house at night, and you shot him in the head? Police would ask him - why did you slay him? "The heck I know if he wanted to kill me, rape my wife, or what his intentions were?
The Law of God is CLEAR -
he is not guilty of murder:
Exodus 22:2
“If a thief is caught in the act of breaking into a house and is struck and killed in the process,
the person who killed the thief is not guilty of murder.
But if it happens during the day - the person would be guilty of murder.
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What if it's an accident? Numbers 35:22-29 details the process for that too.
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What about Sabbath? Simple - have most businesses closed that day. With exceptions for things like hospitals. As the Lord Jesus (Yahoshua) said - which man wouldn't go forth and save his son from danger - even on the Sabbath?
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What about kidnappers with 2 or more witnesses? Death penalty. Case closed.
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What about murderers with 2 or more witnesses? Death penalty. Case closed.
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Homosexuals and Trans would be absolutely
forbidden from being promoted in any entertainment. Anyone caught practicing homosexuality with at least 2 witnesses - death penalty - case closed. People may say - That's cruel! Yea - look at the fruit of abandoning the Creator's Instruction. It's celebrated with an entire PRIDE month for it (with a rainbow for provocation). Under this law - the few doing it would be doing it in secret behind closed doors - and NOT teaching it to little children (who don't know any better), that it's okay to commit abominations.
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Night clubs that are open till late for the youth to get drunk - dance around - have sexual relations with strangers - closed down. Push the idea of men providing a covering - being the head, protector, and provider for his own household. Have that be the role model for young men - NOT - men that sleep around. But men that build themselves and work hard, so they can take on several wives and be leaders in their community.
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It's just a few examples of the Law of God being implemented outside of the Land of Israel.
The issue: It's beyond politically in-correct. These changes can't be done today without Divine Interference. We're too far gone. We're on the Titanic after it already hit the iceberg. Best advice is from Joshua:
Joshua 24:15
But if serving the Lord seems undesirable to you, then choose for yourselves this day whom you will serve, whether the gods your ancestors served beyond the Euphrates, or the gods of the Amorites, in whose land you are living.
But as for me and my household, we will serve YHVH.”