Perhaps I should elaborate. Physical causation, as such, is *not *a necessary truth. (David Hume pointed this out). For all we know, there could be a universe in which many things are not determined by their causes – but we have observed that this is not the case in *our *universe. But why is it not the case in our universe? Possible answers:
- We don’t know that causation always works in our universe. In which case, we have a question of why things always seem to us to follow from their causes.
- There is a determining characteristic of universes, that determines their contingent properties, like rules of causation.
- It just is that way.
Answers #1 and #2 both require an explanation for what makes our universe display causation, or at least seem to display causation. This is, as it were, a first cause to the events in our universe. The simplest answer is God, although there are other answers. God is not bound by the rules of our universe, and therefore not subject to our “universal” causation.
Answer #3 can offer no hypothesis, because it implicitly claims that these things are unknowable.
I’m not intending to convince you with these arguments, however. They’re practice for me, and I imagine they’re not perfect. The idea of objective truth as a standard of belief is a modern idea, and it is very problematic. No one can perceive objective truth from an objective standpoint. Subjective experience is where God takes root, and too much objectivising will drive Him away.