Sorry Coggins, but God doesn't get to have "meaning" in this argument until you can demonstrate that he should, and does. You cannot just assert that he has meaning. You're waving your magic wand around, but it isn't working. You are asserting here that God has meaning because... God has meaning. Just because. That's why.
Nope. Back to Tarski's phrase, what is it about an entity procreating spirit babies forever that is inherently more "meaningful" than anything we do here? Because it lasts forever? So is simple duration the meaningful factor here? What is it, Coggins? Or can't you articulate why God, or Celestial existence has meaning, apart from just asserting that it does?
Whether God has meaning may or may not be an interesting philosophical question, but its a rather strained effort at straw grasping given Beckwith's primary concern. What you appear to be saying is that God, even if he exists, may have no meaning. The implication here would be that God, if he exists, is just another epiphenomena of the universe just as we are. If that is the case, of course, then the Atheist wins the argument, as God is now nothing more than a super being or some kind who makes it up as he goes along, just as we do.
I know of few concepts of God that would hold such a view of him, regardless of the religious system in question. The concept of God of which I and Beckwith speak has, of course, no relevance to those concerns. Again, without teleology, regardless of what the source or origin of this teleology is, the universe is a purely self organized, mechanistic, randomly generated structure that just happens to have existed. All phenomena, conditions, and structures within this universe therefore, are also strictly accidental, chance products of this universe. There can be no meaning in this universe since we know there is no teleology.
You are left with one alternative, and you may, for the purposes of the argument, call it God or whatever.