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.
And still……not the constitution. Not the law of the land. Government determining which ‘religion’ is valid or official is expressly forbidden in the constitution. No matter how loud one is on the subject.