Arguments for the existence of God involve carefully crafted reasoning with the hope that an individual will come to the conclusion that God exists. Also known as proofs for God's existence, these arguments have not always come with full acceptance. Those opposed to natural theology claim that God's existence cannot be proven by human reason or the natural world, and that any attempt to do so runs the risk of becoming a God of the Gaps argument. Viewpoints vary, but responses tend to conclude that God can only be known by supernatural revelation or Scripture alone. Karl Barth is a classic example of this as he believed that God is exclusively revealed in Jesus Christ, and Jesus is only revealed in the Bible. Proponents of natural theology vary as well, but most conclude that the existence