In three places of the Bible it refers to Jesus ruling the nations with a rod of iron. Revelation 19:15 "Now out of His mouth goes a sharp sword, that with it He should strike the nations. And He Himself will rule them with a rod of iron." Revelation 2:27 being a quote of Psalm 2:9 "You shall break them with a rod of iron; You shall dash them to pieces like a potter's vessel." I realize this is a hypothetical question...but Jesus would have no use for the three branches of the government. He is righteous, holy and just and would rule accordingly.
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