Religions are built upon the soul's premonition, the soul's contact with its source of origin. These basic premonitions are universal. Religions have been given color and uniqueness of their own in our attempt to apply understanding to them, but their basics have never changed. As such, religion will appear to change but the universality of religion will not for it is rooted in the origin of people, in God Itself. God, you and I, are the same, both a part of the other, each having their own specific purpose, existing in a symbiotic relationship.
Religion is built upon faith.
It was our first attempt to understand who we are and what our purpose is. But as we become more knowledgeable, we can no longer accept faith alone. It is not enough. Logic begins to take its rightful place in the mind. Our soul begins to expand its creative ability, its learning process, the very reason we were put into this reality in the first place.