"in proof that they meant to comprehend, within the mantle of its protection, the Jew and the Gentile, the Christian and Mohammedan, the Hindoo and Infidel of every denomination."
No, no, no. One must not confuse the notion of the Biblical foundations of this nation as amply provided you in prior posts with the notion of free will and liberty of conscience. The two are not exclusive. Indeed, they are complementary.
A single thread pulled out of a rich tapestry of evidence and conduct by the Framers is no way to attempt a refutation of what is solid historical fact.
NOTE: Art VI forbade a religious test for public office and forbade nothing more.