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Religion
Faith offers certainties, science can't. There is so much we don't know yet, and that will never change.
Explanation
In mathematics you sometimes work with terms that can be quite shocking for a believer. That's not an evil intent. Because mathematics has nothing to do with religions and can therefore not judge them. It is just a way of calculation.
Mathematics does not describe reality, and does not explain nature or the supernatural. Nor is it a substitute for a religion.
Of course there are always intersections with other areas of normal life. Philosophy and mathematics often deal with the same themes. As long as you do that with respect for each other it is no problem.