I found the lyrics of this video interesting. It implies to me that the question of whether or not there is a God is a side-issue and always was, until the Enlightenment wanted to make an issue of it. Up until then, the debate was - what kind of God do you have? Is it a God of power or justice? Not, is there a God? The Bible was certainly written in a context in which the Enlightenment question 'Is there a God?' was irrelevant. In fact, early Christians were accused of being atheists.
Today, as always the question is - what kind of God do you have? Or, to ask this same question with 'secular' language: What do you value most highly? I find this video interesting because it does not put atheists on one side and theists on the other - rather it puts those interested in justice and love on one side (whether religious or not) and those who hurt and abuse on the other (whether religious or not). The issue of whether they believe in God or not is secondary.