If for God everything that was and ever will be is an everpresent "now", then how can God move along side us in our present point in time?
In the strictest sense, He doesn't. Anthropomorphically He does, but by that measure, He also changes His mind, has wings, and doesn't know the past, future, or even present. So if we are limiting our discussion to philosophy, particularly metaphysics, then I'll say that God does not "move along side us in our present point in time."
Furthermore, to say there is a state of Christ eternally hanging on the cross, and then a state where this no longer applies (since it is not an everlasting reality), is in fact to cause a temporal change since the very nature of temporality is one state preceding another.
It is important to make a distinction between an eternal perspective and a temporal perspective. God, experiencing time as an Everpresent Now, has an
eternal perspective. That, however, is a different thing from something being
everlasting, because if something is everlasting then it is temporal, for ever
lasting means it will continue on and on and on. But continuing presupposes moment by moment transitions, which is, by definition, temporal. Thus, the eternal cannot, philosophically speaking, be said to be "everlasting."
Thus, from God's eternal (timeless) perspective, Christ is eternally hanging on the Cross, just as I am eternally being born, just as Satan is eternally being cast into the Lake of Fire, just as the world is eternally being created, and just as the Millennial Kingdom is eternally being established (remember, time is an Everpresent Now). From a temporal perspective, though, Christ's death, my birth, Satan's condemnation, the Creation, and the establishment of Christ's Kingdom are one time events with a past, present, and future.
Great! Have you read it from the beginning and following his reasoning weighing up the A and B theories of time? Which did you find yourself agreeing with in the end?
How about you just ask me about which parts I agree and disagree with. I'd rather not do a book review and page by page point out where I agree and disagree.
Nature involves substance. A relationship involves how one substance stands in relation to another. Thus, it makes no sense to talk of God's 'extrinsic nature'. In the way Craig and I would use extrinsic, this is like say God's nature external to His nature which is just nonsense. When extrinsic is used, it is used to mean external to God's nature. When intrinsic is used, it is intended to mean God's very nature (e.g., omniscience, omnipotence, omnibenevolence, etc).
You are using "substance" more loosely than I would. I don't know that I would agree that nature involves substance. I know that personhood doesn't, and I'd be
inclined to say that nature doesn't either.
Now, essence is a substance. Being is a substance. We have to decide if we are using "nature" to refer to a "thing" or to refer to the collective whole. I mean that this way: a person is not a thing; a human being is a thing. The person I am is certainly separate from the body (that is, the human being) that I "inhabit" (but please don't read too much into that word! I'm not a dualist in the least). After all, if I am dead and you stand beside my casket, you aren't going to look at my body and say, "There is Chris." You are going to say, "There is Chris' body."
Ok, so if "things" are "substance," and a person is a not a "thing," then we have to decide which category "nature" falls into. Is "nature" a thing or a non-thing? But regardless, which is what I go on to say, I don't like any of this discussion anyway, because it violates the doctrine of simplicity. God cannot have two natures and still be said to be simple so long as you view nature as a substance. But if you don't view nature as a substance, then I'm not sure how Craig's argument works in the first place.
I can confirm for you Craig's position on simplicity if you like from a book I have where he touches on this (I am not currently at home, so will need to check this when back home). However, I am fairly certain that in this particular case what it seems to you is not actually the case.
Do quote. The section I read (which I can't look at again right now, because I left the book at work) had him saying that it was a medieval doctrine that had been dropped by modern theologians because it couldn't be reconciled to the Trinity.
How so?
The nature of something is ontological. Ontology is about studying the nature of existence or being. An extrinsic relationship to time in no way affects one's ontological nature (what constitutes their being). I would be interested to read how it does?
I agree the nature of something is ontological. That is why I said, "temporalness or timelessness of God is an ontological issue. So are issues of "nature." If, though, you try to separare nature and temporalness, saying the latter is ontological while the former is not, then you can't get anywhere with Craig's argument in the first place, as you would be mixing categories. Very well, so we are dealing with ontology (as expected)."
But this is precisely where Craig starts mixing categories. Look at your own words: "An extrinsic relationship to time in no way affects one's ontological nature." This is correct! Therefore, since God's "extrinsic relationship" to the universe
does not effect His ontology, then Craig
cannot say that this extrinsic relationship draws God into temporality. That is, if God's ontology is that He is timeless, then His relationship with the world, which does not affect His ontology, cannot be said to change His ontology so as to render Him temporal. But that is exactly what Craig tries to do. He is, then, mixing categories. He is using extrinsic natures in an
ontological sense. But if he is using it that way, then ontologically speaking, God was already temporal. And if God was already temporal, then the argument is circular, because Craig assumes the very thing he is trying to prove.
Yes, Craig in fact offers up a line of argument similar to yours against those who try to argue that God can not be timeless before the creation of the world, because this implies there is a time God existed before time making God temporal. However, it is wrongheaded to look backwards after time's existence to then assume that time's coming into existence could retro-cause time to exist before itself. To do this one needs to presuppose/assume the perspective of temporality (as you point out). You and Craig are here actually in agreement!
Which is the irony, as I see it, of Craig's point, and I think one that is fatal to his argument. It is precisely because we cannot retro-cause God to be temporal "before" the creation of the universe (if there were such a thing) that we cannot appeal to a temporal God to prove a temporal God. But if that is the case, then we cannot say that God was "drawn into a new relationship." Look again at all the words I bolded in the OP. All of that falls flat on its face in recognition of Craig's point here. Thus, we are left with one of two possibilities:
1. God is temporal, and thus needs a cause;
2. God is timeless (eternal).
I agree that if God is temporal then a dilemma appears. If God is timeless then one needs to devote their attention as to how God can be timeless while entering into time with His creation of our world. This is all Craig has done.
I don't see any problems with a timeless (that is, eternal) God. The key is to maintain the doctrine of simplicity.