So if there is no verse in the Scriptures stating God is “omniscient” meaning He knows the past, the present, and the future? Then why do so many Christians believe God is omniscient? The answer is: Ancient Greek Mythology and Philosophy.
It's also worth noting that it takes far more self-confidence, more wisdom, more love, and more sensitivity to govern what is personal and free, than it does to govern that which one has absolute control of. A God totally in control can run a world of controlled beings. But what is magnificent about that? If everything in the universe is already set? Then the conversation God has with humans is more like that between a ventriloquist and the dummy. Such a dialogue is merely a sophisticated form of talking to oneself.