Theists could say the same thing about G-d (of many religions) that His beginning “is not discernible”. They could also say something similar about “omniscience” and our “choices”, that they are compatible in some way that “is not discernible” for us.
The Buddha, in later literature, was said to be omniscient. So all these issues (except perhaps omnipotence) would be applicable as well.
Lets say John is walking on a street and is about to slip and fall. Lets say you know that. Your knowledge of it is in no way causal for this to occur. Knowledge is one thing, someone’s action is another thing. A theist might argue something like that with G-d’s timeless knowledge of the future and your actual choice that you make. G-d’s timeless foreknowledge is of your free choice, not your choice directly dependant on G-d.
Another line of argument is that G-d does not “foresee” the future, because “before” and “after” do not apply to His timeless knowledge of all times simultaneously. Almost like Sarvastivadan belief that present, future and past “exist” like in an idea of “block universe” in modern science & philosophy. Thus his omniscient knowledge is known to him eternally. His knowledge doesn’t constrain your will because he is not causing it to happen, you are. He merely sees what you are doing.
Example: imagine you’re watching a security video of yesterday. You “know” what happened — say, the person on screen stole something — but your knowing it now didn’t make him do it. It is just that you’re seeing it from a different vantage point. Similar with G-d who is timeless and exists outside of time in which we live.
Freedom of choice requires that the choice came from your decision, effort, will, exertion, thinking that was the immediate cause of that choice. That is most important part that makes your will “free”. Your choice rather than someone else’s.
Quick sum up:
Knowledge doesn’t cause events.
Choices are known but not compelled.
No foreknowledge that determines future.
