 Scotus intends this claim to be exactly parallel to the way we think about contingent beings. Why are there elephants but no unicorns? As everyone would agree, it’s because God willed for there to be elephants but no unicorns. And why did he will that? He just did. That’s part of what we mean by saying that God was free in creating. There was nothing constraining him or forcing him to create one thing rather than another. The same is true about the moral law. Why is there an obligation to honor one’s parents but no such obligation toward cousins? Because God willed that there be an obligation to honor one’s parents, and he did not will that there be any such obligation toward one’s cousins. He could have willed both of these obligations, and he could have willed neither. What explains the way that he did in fact will? Nothing whatsoever except the sheer fact that he did will that way.