Founding Fathers didn't want the US to be a Christian nation
I know this is going to cause controversy but I am only giving you the facts.
The constitution never mentions any deity because the founding fathers wanted this to be a religion neutral nation.
George Washington and John Adams in the 1796 Treaty of Tripoli wrote, "The government of the United States of America is not, in any sense, founded on the Christian religion."
After George Washington's death, Christians made an intense effort to claim him as one of their own. This effort was based largely on the grounds that Washington had regularly attended services with his wife at an Episcopal Church and had served as a vestryman in the church. On August 13, 1835, a Colonel Mercer, involved in the effort, wrote to Bishop William White, who had been one of the rectors at the church Washington had attended. In the letter, Mercer asked if "Washington was a communicant of the Protestant Episcopal church, or whether he occasionally went to the communion only, or if ever he did so at all..."
On August 15, 1835, White sent Mercer this reply
In regard to the subject of your inquiry, truth requires me to say that Gen. Washington never received the communion in the churches of which I am the parochial minister. Mrs. Washington was an habitual communicant.... I have been written to by many on that point, and have been obliged to answer them as I now do you.
James Madison was a fierce atheist once writing, "What have been Christianity's fruits? More or less in all places, pride and intolerance in the clergy, ignorance and servility in the laity; in both, superstition, bigotry and persecution."
Thomas Jefferson also found Christianity to be a joke writing to John Adams in 1823, And the day will come when the mystical generation of Jesus, by the supreme being as his father in the womb of a virgin, will be classed with the fable of the generation of Minerva in the brain of Jupiter." In Notes on the State of Virginia, he said of this religion, "There is not one redeeming feature in our superstition of Christianity. It has made one half the world fools, and the other half hypocrites"
Jefferson was question about his reference to "Nature's God" the "Creator" and "divine provence" in the Declaration of Independence to which he replied that he was not referencing a "Christian" God but a "cosmic energy".
The Reverend Bird Wilson, who was just a few years removed from being a contemporary of the so-called founding fathers, said in a sermon that "the founders of our nation were nearly all Infidels, and that of the presidents who had thus far been elected [George Washington, John Adams, Thomas Jefferson, James Madison, James Monroe, John Quincy Adams, and Andrew Jackson] _not a one had professed a belief in Christianity."