That’s the Euthyphro dilemma all over again. Since few would want to accept the result that morality is arbitrary, we must conclude that morality is independent of the law.

Euthyphro tries several flawed explanations. The most famous is, "Socrates, my friend, it is simple. If an action pleases God then it is holy; if an action displeases God it is not holy." ...

This dilemma - called the "Euthyphro dilemma" after Plato's great dialogue - is often taken to be a devastating objection to the Ponnuru view that morality is grounded in God's commands.