There is no reason to suppose it a supernatural event. There are many theories, all being worked on. The truth may emerge. More likely a number of ways that life could have emerged will be shown to be plausible. We know it is fairly simple , since life emerged so quickly after the formation of the earth. Perhaps if/when life is discovered on Titan or Europa, we will learn more. Pinning your supernatural hopes on the emergence of life is extremely foolish and short-sighted of you, and consequently absolutely typical.