Many atheists consider Darwin’s theory of evolution the proof that God does not exist. On the contrary, it is the basis of God’s existence. God is not the creator of the universe but rather its ultimate creation, the optimal expression of the inherent potential of the cosmos. He is the maximum actualization of possibility. Physicists say that anything not forbidden is compulsory. God is the compulsory apex of cosmic existence. Modern science has led to a complete loss of a religious sensibility in the Western world. Religious assertions increasingly sound crazy and ridiculous. The irony is that religion is ultimately scientific. There is no contradiction between science and religion. It is not religion that is abolished by science but atheism. Welcome to the world of the scientific God of cosmic evolution. God not only exists, he is inevitable. Here is the proof, from first principles.