The Christian faith does not call for us to put our minds on the shelf, to fly in the face of common sense and history, or to make a leap of faith into the dark. The rational person, fully apprised of the evidence, can confidently believe.
William Lane CraigScepticism, ironically, draws its life's blood from claims to have a good deal of knowledge. For example, your friends claim to know, 'Since every possible option has not been explored, nothing can be said for certain.' That statement is itself a claim to knowledge!
William Lane Craig