Religion has always involved a tension between knowledge and faith. Jesus taught, “And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.” At the same time, however, Paul cautioned believers that “faith is the substance of things hoped for, the evidence of things not seen.” Jesus made clear to the apostle Thomas that, of the two, faith is the greater goal: “Jesus saith unto him, Thomas, because thou hast seen me, thou hast believed: blessed are they that have not seen, and yet have believed.”