You are correct
@Dan Mellis . A truly omniscient and omnipotent creator cannot exist with free will in the subject matter of Its creation.
It would, by definition, know exactly how every quark and gluon in every neuron would influence every other in the minds of paupers and presidents in every civilization in the cosmos, 13 billion years after it started roiling all that energy (and matter?) back when It was creating the universe.
What’s gonna really cook your noodles is considering whether free will exists even in the absence of an omniscient God-being.
Seriously. If every neuronal connection and firing in your decision-making process is the result of a chemical reaction, and those are due to the motion of atoms and electrons; and at best those are influenced by the motion of magnetic fields, and gravity waves, ionic bonds, and/or photons zipping at you from 1 light-hour away for any decision you made in the last hour......then when in that (extraordinarily complex) chemical reaction did “human sentience” put its 2-cents into the process? And where in that process are you arbitrarily defining “human sentience”?