Interesting interlocutor... I don't think I've been called that before 😃
I couldn't find that book on my audio book app but found a few podcasts the author has been on so I will have a listen soon.
The Israelites had a system of law and property rights and judges but were probably left alone to live out the ten commandments and ritual temple themed get togethers for the most part. That's closer to what I imagine life should be in the church. Something closer to what libertarian philosophy points to, if people were raised with the belief that it is wrong to hurt people and touch their stuff the that is all the law we need.. I would never advocate for church people attempting to weild what we have now, which is oppressive and run by a parasitic elite class of politicians.
As for Jesus coming back with a sword? In that passage in Revelation it indicates His robes were stained with blood as he rode in so it's probably His own blood, not those He's apparently slaughtered before coming to earth.. And the sword comes from His mouth. That seems to indicate to me that it is the sword of the word.. How does Jesus return? With His word.