What can it mean to say that God the Son of God died this afternoon?
Non-being is strictly incoherent. We can indicate it, but only as we might indicate a square triangle. When we refer to non-being, there’s nothing actually there to which we might be referring. There is nothing we can say about non-being, except that there is absolutely nothing we can say about it; for there is nothing to it, about which we could say anything. It’s not quite correct to say that it has no properties or characteristics, because it isn’t an item in the first place. It has no ontic hooks upon which properties or characteristics might be hung.
So it isn’t conceivable. It cannot be brought to mind. And this is not a limitation only of our finite creaturely intellects, but of logic: for there is nothing in non-being that any conceivable intellect could bring to mind. Not even God can imagine what non-being is like. Certainly, then, non-being is not possible.
Since non-being is impossible, it is necessary that something exist. Thus in the state of affairs prior to the existence of any and all contingent things, there necessarily exists a necessary being. [When I began to write this post, I didn’t set out intending to stumble upon an argument for the existence of God; but one thing I have learned about metaphysical reasoning is that it almost always ends up entailing the existence of God].
And once a being exists, it cannot somehow un-exist. It can stop becoming, stop recurring, so that it no longer perdures. But it cannot go on from being to achieve non-being. Facts are everlasting, and immutable. And as we have just seen, you can’t get a state of affairs in which there is no God. So God is an immutable fact.
God can’t die, properly speaking. What, then, again, can it mean to say that God the Son of God died on Calvary?