Christians sometimes say "we live by faith", but this is not what the Bible says. We live by the "faith of Jesus". There is plenty of evidence for the faith. The second kind of biblical "faith" is the "faith of things not seen", that is the promises of the Second Coming heaven and future new earth, judgment upon Satan. But, there is plenty of evidence for the Christian faith. The entire history of Judaism is the foundation, but also before Israel such as the city of Babylon, Iraq, and much much more. Christianity is not blind faith. There is no proof for any other gods.