The right of State secession is rooted and grounded in the Word of God. Did the Holy Spirit not inspire the New Testament writer to say, "Now all these things [Old Testament history] happened unto them for ensamples: and they are written for our admonition, upon whom the ends of the world are come"? (I Corinthians 10:11 KJV)
The last time I checked, the Holy Bible contained 66 Books, not 27; and Jehovah's introduction of civil government in the Old Testament is replete with examples of State secession.
Did God not separate the nations at the Tower of Babel in Genesis chapter 11? He certainly did. In fact, the goal of global union was first attempted at Babel. At this point, it was God, Himself, Who was the sponsor of "State separation."