Can and Abels Story - The Sacrificial Ritual

Cane and abel are two sons of adam and eve. They're really the first people, because Adam and Eve were made by god. Sacrificial ritual is a human universal. Why do people make sacrifices to god to please them? T seems like a mystery to modern people. And you can laugh about that, but it's not primitive. The night sky confronts you directly with the fact of the infinite.