[TheRealThing]

I understand that is your sincere conviction. However, the Church, based on Scripture, organizes and governs and speaks of what choices, behaviors, and attitudes are "crooked." Our Constitution is seeking, at highest interpretation, to ensure equal protection under the law for all. Not exactly the same organization or the same mission, and in my view that difference is ordained by God.

You know, correct interpretation of Scripture is not subject to nuance either. God says what He means exactly, and though understanding that meaning is achieved largely via the gift of The Holy Spirit, said meaning is still singular and applicable to all. There is only one interpretation so you can drop the pretense, just acting above it all doesn't quite deliver for anyone worth impressing professor Corey.

To the bolded. You can't demonstrate that position from anything in the Old Testament, because as we've gone over time and again on here, Israel was much of the time a Theocracy. God's plan. And even during the times she was ruled by Kings, deference was given to the Church and/or the Prophets by those Kings. God's attitude is the same timelessly;
Hebrews 13:8 (KJV)
8 Jesus Christ the same yesterday, and to day, and for ever.

In the New Testament God has clearly revealed His plan to govern men here on this earth with exacting precision and inflexible control.
Revelation 19:14-15 (KJV)
15 And out of his mouth goeth a sharp sword, that with it he should smite the nations: and he shall rule them with a rod of iron: and he treadeth the winepress of the fierceness and wrath of Almighty God.

When the Lord rules on this earth during the Millennium, government will certainly not stand apart from His authority, nor will it be in any way empowered outside of His good graces. I doubt sincerely He would be okay with giving men full rein to do as they think right in His absence. Remember the standard set by the parable of the talents? In short you can keep coming at this thing from all 360 degrees or until you turn blue for your efforts. The concept of separation of Church and State cannot be substantiated anywhere in Scripture. And though I agree that at present it seems that man is getting by with doing things his way, he will nonetheless suffer judgment for his defiance. And let's face it, man's effort to govern himself apart from Godly principles certainly hasn't worked out so well to date now has it?