Where did evil in the world come from? In this article Edouard Tahmizian considers God’s causal influence on the origin of evil. He aims to show that, if biblical hard determinism is true, God would be the efficient cause of Adam and Eve’s transgression—the original sin that the rest of humanity inherited when the first humans, Adam and Eve, purportedly ate fruit from the tree of knowledge of good and evil according to the Book of Genesis. Moreover, he argues, even if biblical hard determinism is not true and all events could have turned out differently, God would still be the final cause of Adam and Eve’s sin, making him at least somewhat causally responsible for the sin of Adam and Eve that we all purportedly inherited. In the end, Tahmizian’s analysis implies that God is ultimately the source of all evil.