Analytical Outline: Morriston’s “Must there be a Standard of Moral Goodness Apart from God?”, Philosophia Christi 3:1 (2001), pp. 127-138.
1. Setup: Divine command theory and the Euthyphro Dilemma
2. Modified Divine Command Theory: Two Versions
3. Problem for the Platonic version: falls prey to a Euthyphro-like dilemma, applied to God’s properties
6. Implications of Platonism I: Ways in Which Platonism Doesn’t Restrict God’s Sovereignty
7. Implications of Platonism II: Ways in Which Platonism Restricts God’s Sovereignty
188.8.131.52 Therefore, even modified divine command theory, like Platonism, makes moral goodness beyond the control of God.
(184.108.40.206 Therefore, it’s not at all clear that modified divine command theory is motivated over straight Platonism)