He is, of course, speaking of the traditional "man in the sky" kind of god. But God, to me, is the same word as "good", and if people that I converse with regularly were a bit more open-minded I might use the words "God" and "Good" interchangeably.
These are symbols. God representing all that is good, "the devil" representing all that is bad.
God is a butterfly in a garden. God is a smile from a stranger that ultimately prevents someone from committing suicide. God is all that is good.