The Bible never tells us to take a blind leap of faith into the darkness and hope that there's somebody out there. The Bible calls us to jump out of the darkness and into the light. That is not a blind leap. The faith that the New Testament calls us to is a faith rooted and grounded in something that God makes clear is the truth.
R. C. SproulWhat is the difference between the Christian God, and the gods of the other religions?" He simply, yet profoundly answered, "The main difference is this: The God of Christianity exists.
R. C. Sproul