Whatever is not of God is of the devil.
Denying that is pointless.
Satan’s most effective tactic has always been to convince people he does not exist.
Your argument is specious and pointless. The United States, the Constitution and many other things you take for granted are not mentioned in the bible so then they must be of the devil. For that matter the only religious belief mentioned in the old testament is Judaism so all other beliefs must be of the devil. An absurd and brainless point of view. God and Satan certainly exist as does your right to believe whatever you like; as long as you don’t make like a muslim or a democrat and try to deny or put down anyone’s right to believe or NOT believe, a right that is guaranteed by our Constitution.