Using the arguments against actual infinites against theists

[MindForgedManacle]

You said pretty much what my examples were trying to point out.

"We know from quantum physics that there are essentially an infinite amount of possibilities. With the many world interpretation of quantum mechanics for example, there is an infinite amount of possible states which are all actualized."

If the many worlds interpretation is correct, all possible states will be continually actualized into the future, since there are infinite possible configurations of the universe that would mean an infinite amount of different states. But if you continue this process into infinity all states will be actualized; That is only if the many worlds interpretation is correct I'm pretty sure. But what we do know for sure is that there is definitely an infinite amount of 'possible' states from physics. If god is all knowing, he must know all the possible states in order to be omniscient, but that doesn't mean all states are actualized.

You actually indirectly make the point I was making. "Infinity" and "unlimited" are similar, yet distinct, concepts. As you see in your own post, the MWI interpretation has worlds branching off and causally decohering from each other (if I under it correctly). Hence, this is a process. Now, you say that if you continue this process "into infinity, all possible states will be actualized". The problem is that since infinity isn't ever "reached", all states are never actualized. All that really happens is that more states are continually actualized since there is no upper bound so far as we know. But there's the difference between unlimited and infinity: the former denotes no limit, the latter denotes being unending. If you don't see the difference, consider this:

Say I have a normal sized bathtub that's filled. Now, let's say my bathtub is basically magic and so even if you take water out of it, the amount of water in it never decreases. Clearly, I have an unlimited amount of water, but do I have an infinite amount? Of course not, there's always a definite, finite amount of water in my magic tub at one point, and the same for the amount of worlds in the MWI.