God is not mentioned in the constitution.
And just what kind of argument is that against the premise that the Constitution is based upon belief in God? Just where do you think that the principles it expresses came from? Atheism? What kind of Justice and the Blessings of Liberty? Did the Founders operate out of a vacuum? How many were atheists, versus men who supported basic Biblical values and its principle of separation of powers on the federal level?
What states did they censure for affirming God?
Many of whom expressly affirmed the Bible, even if not all were Christians.
See HISTORICAL QUOTES IN CONTRAST
There is this however.....
Declaration of Independence
https://www.archives.gov/founding-docs/declaration-transcript
Which I know you are going to argue is not the Constitution but the Constitution was set up to establish the government that was formed from this document.
The kind of atheistic worldview that is espoused today that uses that kind of argument to divorce it from it’s beginning did not exist in the days our government was established.
The Constitution is to regulate us, not God.
The Declaration of Independence preceded the Constitution, and He most certainly is acknowledged, four times:
Creator
Nature’s God
Supreme Judge
divine Providence
Is the brain mentioned in the Constitution?
No, but the concept of the brain is presumed throughout. The Constitution is thus founded on the concept of the brain.
And the Constitution is founded even more directly on the concept of God, via the principle of rights.