religion has and continues to change dramatically to suit the climate of whatever culture it is rooted in. 1+1 has always amounted to 2, and will always continue to do so. Subtraction will always take something away and addition will always add something to. Math is a human contstruct, but it is used as an indicator of the universe. Math applies to everything imaginable. Religion's tenets deal with purely moral matters. Morals are a human ideal the apply only to humans. For example, the rate of a falling body is not determined by morals. Core mathematics are not subject to interpretation. Religious ideals change radically even between individuals of the same faith. Mathematics is a human discovery and tool. Religion is a human construct.

- it responds to the human need for protection - it responds to the human need for simple answers for very complex questions - it responds to the human need for parental love

Faith is a human behavourial instinct that is the basis for the social construct of religion.
Religion requires bodies that administrate them, they in turn create dogma that support their view of the world as they would like it. They demand that people have faith in the teaching, rather than question the teaching and become a heretic or apostate.
So from this point of view religion is a method of social organisation that has little to do with saving peoples souls, and far more to do with command and control. Anyone who has met a bishop will see my point.
Faith is he human behaviour that is exploited by religion. Remember Wako?