Religion

"perceive all of reality" then you are pretty much outside the laws of physics as we know them.

Your perception would ignore the speed of light barrier, and could see the macro, micro and quantum.

You probably could see at all points on a timeline (although if a photon could think/perceive, so could it along the track it traveled since time stops at c and a photon is, from it's perspective, everywhere on it's line from start to finish at the same time).

IF you could do all of those things, then yeah you probably could answer all those queries. You could read the book from front to back, simultaneously. You'd know who killed the cook and with what instrument in what room.

Of course, again, you'd have to break all the rules the universe has, and it certainly makes free will seem illusory if one can do that because no matter what free will you think you have, page 74 is coming, and you are going to kill the cook in the living room with a knife.

That's ignoring of course the possibilities of a multiverse, or an infinite, repeating universe, in which case all choices are made by all versions of you which renders no particular choice at all special (since all choices must be made by at least some of the infinite versions of you). A multiverse really, really destroys any notion of a God, or the uniqueness of reality.