Not at all, they specifically resisted the establishment of a state religion because they were intimately familiar with the incredibly corrupt Church of England. They also had no love for the Calvinists, the evangelicals of the time. All this Christian nation stuff uses the founders as ammunition and their often contradictory thoughts on religion but it is really an argument that we as Americans do not have the right to be free of religious indoctrination. Practice as you see fit but leave me out of it.