created in seven days? or did it take millions of years of evolution? >> both. both of those languages -- >> science gives us insight into the how. how the universe works, how particles behave. but it gives zero insight into why. and i mean why are we here? what's the meaning of it all? for some people, religion offers some degree of insight into those very important questions. >> important and difficult questions, the bible forces us to think about. like jealousy and rage. and why some people come to hate and harm each other. a lesson starkly taught in the story of the first children, the first siblings. cane is a shepherd and able is a farmer. both offer sacrifices to god. but god likes able's better. >> this is about life as we know it. and life as we know it is not fair.