Mark Twain once quipped, “faith is believing what you know ain’t so.” That isn’t Christianity. The fact that some Christians may have blind faith is not the same as Christianity itself championing blind faith and irrationality. Historic Christianity has always emphasized that faith and reason go together. In everyday terms, faith is simply trusting in what you have good reason to believe is true. Faith in the Christian life is trust that God is who he claims to be and will do all that he has promised to do. This is reasonable because God has shown himself to be reliable and trustworthy. So faith is not belief in spite of the evidence, but belief in light of the evidence.