Preferatory Clarifactory Remark: What I am about to say should be interpreted more in the way you interpret poetry than in the way you interpret statements about physics. The following does not claim to have anything important to do with theories in physics. I am spinning a parable. Please do not laugh at me for not understanding physics, because the following does not reflect my understanding of physics.
Okay, got that out of the way.
Here’s how I used to like to think of the whole “outside space and time” thing w.r.t God. Basically it amounts to treating “outside space and time” as not being outside all space a and time but as being outside our space and time. I am not sure it can possibly be coherent to ascribe actions to an entity that doesn’t exist in some space and time.
Imagine a one dimensional universe–Lineland. Imagine there are little beings moving back and forth in lineland. Now graph their movements by adding an axis perpendicular to Lineland and treating the second axis like a “time” dimension. The movements of beings in Lineland, then, are graphed as lines segments and curves in the spacetime graph we just made. Clear so far?
Now imagine you are looking at that graph. You’ve got your own space and time–yours consists in three dimensions of space and one of time–and Lineland’s spacetime is embedded in your own. Lineland’s space dimension extends in a spatial direction in your own spacetime, and Lineland’s time dimension also extends in a spatial direction in your own spacetime. In your spacetime, Lineland’s spacetime looks like a plane.
Now look at the spacetime, with all its spacetime paths traced out as curves and line segments on the plane I just described. Imagine you have the power to reach in and modify these paths. This means that from the point of view of someone in Lineland, you appear to be able to make changes at any place and any time.
Imagine some possible graphs of Lineland are in some way “better” than others. Imagine the actual graph is one of the “worse” graphs. But I have the power to make changes on the graph, so why don’t I just go in and move the curves and line segments around til they make a “good” graph? (Thereby changing not just the Linelanders’ present, but their past as well, but if that’s necessary to make a “good” graph then what can be the objection?)
Perhaps my power to make changes on the graph isn’t unlimited. Maybe there are rules (whether some kind of “physical” rule or some kind of “logical” rule) about what kind of changes I can make to an area of the spacetime graph of Lineland, constraints on what I can do to that area, based on what things look like in other areas of the graph, both in the “past” direction and the “future” direction.
In that case, I will do what I can, but I will need the Linelanders themselves to do certain things to get their own self-generated curves and line segments into the right configuration to let me work my own “magic” on their pasts and futures.
A way to think of this is as follows. Perhaps for any configuration of Linelanders in a single timeslice of Lineland’s spacetime graph, there are only certain “histories” and “futures” compatible with that configuration. I can make the history and future as good as possible given that configuration, but if the history and future is going to be even better, the Linelanders themselves are going to have to do something to make the history and future better than it might have been.
So the picture is this. The ideal situation is one in which the entirety of the spacetime graph of Lineland–from the beginning to the end of it–is “good.” In other words, the ideal situation is one in which the Linelanders are are in a “good” configuration, and always have been and always will be. But as things stand, it might be that in most areas of the spacetime graph, the linelanders are not where they should be, or haven’t always been as they should be, or won’t always be as they should be. In this case, however, it may still be possible for me to bring it about that their history and future changes into a better history and future, but I may need them to do part of that work due to constraints (compatibility constraints) on the kinds of changes I can make on the spacetime graph.
Of course the idea when I used to spin this kind of stuff out was for this to be an analogy or parable. The Linelanders is us, and you is God.