At the nation’s founding, the Bible was not the most quoted text. This claim comes from a study that includes a lot of sermons reprinted on pamphlets, so, every time a religious sermon was printed on a pamphlet, which happened a lot back then, that counted as quoting the Bible. Additionally, these weren’t founding fathers quoting the Bible, but preachers preaching.
The most cited authors at the time of the founding were: Montesquieu, Blackstone, and Locke.
The period when the US Constitution was drafted has the lowest church attendance in US history.
The Federalists did not cite the Bible at all around the founding. The Anti-Federalists cited the Bible as nine percent of their citations. The Federalists, those who wrote the Constitution, did not cite the Bible when arguing for the Constitution. They believed in separation of church and state.
Christianity is a deep part of American culture and history, but people falsely exaggerate its direct role in the founding of the country.
Many state governments violated the principles of separation of state and church, but when the founders, who were sent by the states, came together to make a Constitution, they left such violations out of the new federal government and forbade acts that would create an established religion.