A Pure Faith

Would it be possible to come to a "pure" faith apart from all the particulars, cultural trappings, and situatedness of the religions that actually exist in the world? Is there some purity behind all the peculiarities and specifics of Judaism, Christianity, Islam, Hinduism, and so on? And if it is possible, how do we reach such a faith?

Or does the soul of faith require the body of a religion? And if so, are the bodies perfectly interchangeable?

Could we create new bodies as we like to house the soul? Or are there criteria that must be taken into account for making suitable bodies?