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.