The presence of an Omniscient, Omnipotent, Omnipresent creator God precludes any meaningful idea of free will. The proof of this is fairly simple.
You sit and watch as a man walks up to a stream. He is faced with a decision which he makes of his own free will: to continue on or go back. Seeing no dry way across he goes back.
You now jump in your time machine and go back one hour. You drag a log so that it crosses the stream at the location where the man will approach it. You wave to yourself and sit down to watch.
The man approaches and finding a way across decides to cross the stream.
Back to the time machine back an hour again. Laugh politely as your previous incarnations make a joke about it getting crowded in here. And then…
What? What do you do? Do you put the log where he can find it or remove it? By doing so you determine the man’s actions because you already know how he responds to the give stimuli. Free will for the man is an illusion based on his ignorance of your power to control the scenario he finds himself in.
You know how the subject will behave under give circumstance
God (omniscient) knows how everyone will ever behave under every possible circumstance
You have the power to control the circumstances and thereby determine his action
God (omnipotent) has the power to control every circumstance and thereby determine every action
You have access (via the time machine) to the instance in question
God (omnipresent in time and space) has access to every instant ever
The only question is if you choose to exercise your power by creating a scenario
God (creator) has created the scenario by creating the universe, nothing happens in it that he did not choose to have happen
Hence the notion of an Omnipotent, Omniscient, Omnipresnt Creator diety negates the possibility of free will.