The idea of an atemporal creator is incoherent. Any creator has to change from “I will create” to “I am creating” to “I have created”.
Well, no. Any temporal creator has to change from “I will create” to “I am creating” to “I have created.”
But again, God is eternal. That would entail that what God creates (the universe, for example) exists eternally although it may have within it a temporal or limited time signature – a beginning, a middle and an ending, along with a chronology inherent within it. That does not mean the entirety of the thing – the universe, for example – could not exist eternally.
When speaking of the universe having a beginning, that implies a beginning as an aspect of the integral ordering within the universe, but that need not imply a beginning with respect to God’s timelessness.
A story or narrative in a book, by analogy, has a beginning, a middle and an ending, but that chronology does not apply holus bolus to the reality where the author of the book dwells “outside” and independent of the story. If a book or a story existed eternally, it could still have a beginning, a middle and an ending (and all other changing aspects) within it without those necessitating changes to the chronos outside of the story where the author lives. There is nothing in the book or story – even if seas are parted or restored – which would necessarily imply anything whatsoever about the writer of the story having undergone changes as a result.
God parted the sea for Moses. He did not part the sea in the time of Abraham; he is not parting the sea now. He must have changed from not parting to parting to not parting again. If God can change in time, then God is not atemporal.
rossum
Why would God, himself, had to have changed when parting the Red Sea? Certainly the Red Sea changed, but why does that entail God changed in any integral sense?
God, in classic theism is the fullness of Being Itself. All things exist fully in God. Nothing integral to God changes although contingently existing things can change relative to their own nature.
If the universe as an entirety – beginning, middle, end – exists eternally, whatever change occurs within it as an aspect of it need not entail anything with regard to the changelessness of God. The universe as an entirety may exist eternally even though change occurs within it as an aspect of its integral chronology. Its internal chronology, however, says nothing about God’s chronology, unless you assume God is constrained in some way by the chronology found within the universe. I see no reason to assume that and you have made no convincing case with that regard, except to project your perspective from within the timeframe of the universe onto God as if God has no other possible option.