From Jacob Hunt of Jacob’s Blog:
When characterizing the powerlessness of God in process and open theology, he is probably comparing them to the power of his God. And while it is certainly true that the God of process theism is not all powerful, you simply can’t say that about the open theist God. In open theism, God is all-powerful, he’s simply decided to use more restraint than the Calvinist God because he wants to share that power with His creatures. To illustrate, a bodybuilder who isn’t currently lifting weights could be much more powerful than one who is. Somebody not using their power doesn’t mean they don’t have power to use. Similarly, there’s no reason to think that an open theist God is less powerful than a Calvinist God.
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