Faith is a vital topic in Christian theology. However, the concept is more complex than is assumed. John Stott writes: "One wonders if there is any Christian quality more misunderstood than faith." We demonstrate that Scripture uses faith in a variety of ways, including saving faith, false faith, miracle faith, empowering faith, and visionary faith. Failure to recognize this leads to serious error in both Arminianism and charismaticism. Included is an extended section on visionary faith that enables us to step out in courage, taking risks to pursue human plans to fulfill God's commands. In our defense of the fact that biblical faith must rest on biblical revelation, we critique the inclusivism of John Wesley, Billy Graham, and C. S. Lewis which claims salvation can be apart from a revelation of the Gospel. Finally, we demonstrate that the strength of our faith depends on reason, and the evidences it perceives and evaluates. There is no such thing as a biblical "leap of faith" apart from reason.