You can say that God is the mechanism behind evolution (I favor this) which is an advancement on Deism in a way, but that would mean that you don't pay attention to Genesis. You can also say that Genesis is 100% factual (never once have I met anyone who advocated this), but then have to say evolution and the age of the planet is not in line with scientific teachings). Or you can say you don't believe in God and just move on.
But if we walk in the light, as He is in the light, we have fellowship with one another, and the blood of Jesus, His Son, purifies us from all sin.