Interesting read. Thank you.
What is clear, is that the founders and framers were not hostile to religion playing a significant role in public and even political life. Notably, the 1st amendment's anti-establishment clause did not restrain the States from having official state religions until the 14th amendment was ruled to have "incorporated" such limitations against the States as well as against the federal government. (Admittedly, by then all States had long since dropped state support of any church.)
Even those founders/framers who themselves are today viewed as being non-religious, recognized the importance of religion in the nation. A free nation lacks sufficient government power to enforce laws through external means. We rely on most people voluntarily behaving appropriately due to internal controls that are most often nurtured through religious instruction and observance.