They were a diverse group of people with wildly different views on things, and most states had some form of religious establishment at our founding. Remember, the cotus was originally a restriction only on the federal government, and didn’t extend to the states until the 14th amendment after the civil war.
Plenty wanted, and had, state supoortes religion. Plenty meant freedom of religion for Christians.
Which is why this is such a contentious issue… It’s always been that way.