Your brain analogy is silly and will be ignored.
The influences on the bill of rights were from many different places, both secular and religious. The concept of human rights and rule of law goes back thousands of years and hundreds of years before Paul wrote his version.
The US didn’t perfect human rights in their founding documents either, as it made allowances for slavery is one example.
The constitution explicitly states there is no national religion. The type of Christianity practiced by most people who claim the constitution is their work didn’t even exist then.
It is not yours or your version of Christianity to claim. It gives you the freedom to worship as you choose, but no special right to enforce it on others or claim ownership.
I was trying to help you understand that some concepts are so properly basic that they can’t be removed from the matter at hand.
The concept of God in our Constitution is such a properly basic concept. Another is logic itself. I’m fairly confident you wouldn’t try to say logic doesn’t belong in the Constitution.
God is more fundamental than logic, because logic comes from God.