“In a theocracy such as the Christian Nationalist movement would like to see established, what would be the most biblical way to treat people with non-Christian religious beliefs?”
I’m never a huge fan of hypotheticals, and this is a big one. Notwithstanding the efforts of our postmillennialist friends, I believe the next (pseudo-) theocracy we’re going to see on this planet will be global beast-worship, to be followed shortly by the glorious millennial kingdom of the Lord Jesus, who will not require my advice about how to administer justice.