IOW, what we see as a movie, frame by frame, He sees all at once, as a whole. He is also able to change it, in any direction - and we'd never know He did unless He told us!
This seems to be similar to a concept which occurred to me while I was thinking about how God manages to answer many different prayers, from many millions of people.
Consider one person: each individual has many choices to make, every hour--some important, and some (seemingly) irrelevant. An important choice might be moving to another city, taking a new job, or deciding to marry. The apparently irrelevant might be what shirt to wear, or whether to brush one's teeth, or whether to retie a loose shoestring.
Every time one of these choices is about to be made, there are at least two possible timelines -- one if choice A is made, and another, if choice B is made. Everything which occurs AFTER this choice is switched into one or the other of these timelines. So, then, thousands of possible timelines, every day, are chosen; in being chosen, they become part of that which solidifies into "history." And, that is for only one person. The same thing happens for each of the billions of people alive today.
God, of course, is perfectly able to see all of the possible future timelines, not only for one person, but for all of those billions. Thus, God is able to answer prayers, by many means--everything from blatant miracles to nudging people to make certain choices. Furthermore, having said in advance that he will certainly do certain things (gather Israel back to the promised land, for instance) He is perfectly able to cause those things to happen, while still allowing people to make their own choices.
[Of course, it should be noted that this is only a concept, not directly derived from scripture.]
It is evidently very common for theologians to presume that God is limited to a timeline, i.e. He knows the future because He foreordained it. All I can figure is that, since they can only conceive of existence on a timeline, that they have presumed God must be limited in the same way.
I think we should never limit God (in our minds) to only those things which our minds can conceive.
DG
Others propose the existence of extra dimensions of time. If this were true, the timeline we are on including our sense of history and future would be like a vector on a plane and not a line per se. Thus a change could be made to our "history" but we would never know it happened because our present and future would be changed as well.
At any rate, whether history is solidified or is malleable, and regardless of which direction the arrow of time is pointing, God is certainly not bound in any respect to our sense of time, much less a timeline. As you say: