"God"?

The "God" of *any* religion, due to the nature of the human mind and sensory system, is necessarily a figment of the imagination. If follows, all too tragically, that all tenets, dogmas, and methodologies for interacting with such a "God" are also imaginary and self-circular. If any truly believe that they are made in the image and likeness of a "God", then such an entity must have absolute commonality with each and every human being whoever existed, does, or will exist. That means that no single religion, or collection of them, can possibly point with any accuracy to a deity. 

The only possible such commonality is awareness, as such, itself. Religions don't address awareness itself, so their methodologies are insular and self-referential. If there is a methodology which is transformative, it must be one which experientially makes the nature of awareness conscious. 

That methodology has been around and has yielded identical results from the dawn of history. It has yielded those results regardless of time, location, culture, status, gender, intellectual capacity, religion or the lack of it, political or economic standing, or any possible criteria, including contact or lack of it with others who come to the same discovery. That methodology includes deep self-inquiry, negation of opposites, and the most celerituous route, direct pointing. Once the inevitable result of that work is revealed, the world, remaining inevitably the same, changes radically and completely as seen from this standpoint. Religion and the lack of it both fall away as easily as a mirage disappears.

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Religion isn't the cause of good behavior. It's the accidental coincidence of explanation for it, depending on where you were born and to whom. Further, it is more likely to be the cherry-picked justification for ego's vagaries and random preferences, mild or perverted.