I am an orthodox Christian, ask me a question!

[Jon Paul]

God does not "come into existence", a temporal designation that doesn't apply to a transcendent being, so your question is fallacious at it's root.

Therefore, your entire argument is based on the existence of a realm that lies outside all the known laws of space and time. A realm that cannot be examined or investigated or be subjected to any known tests or experiments. A realm that cannot, by universal standards, exist as the very nature of existence requires a temporal dimension.

That is certainly not the case. Not according to modern physics, and not according to anything but your own assertion. And what's funny is that this objection is in direct contradiction with Kyu's. I will just let the humour of that fact stand for itself.

In which case the multiverse also never came into existence in a temporal sense (time being a an attribute of our universe)

Well, whether a thing is temporal or not isn't the sole criteria for pure actuality (since that's what you errorneously assume). Angels are not held by Christian metaphysics to be temporal in the sense of the universe, either, but they are not God for that reason.

All this psychobabble about pure actuality and all that is just a dodge to stop you having to make any sense ... all it is is post modernist claptrap!

Right. I have already told you denying the reality and difference between actuality and potentiality is not going to work. It's not in accord with modern physics nor with any basic intuition about reality. And those terms are certainly not post-modernist, they have been used in a 2500 long philosophical tradition and their use survives to this day in modern physics and metaphysics.