What the heck is that supposed to mean? Seriously.
It means that God's act of willing just
is the existence of contingent beings, such as stars and planets, dogs and cats, you and I.
You're not saying anything. I'm drowning and you're describing the water.
Forget about the "timeless eternity" bit for right now. I'm trying to draw a distinction between God's knowledge and his creative activity. The main thing to see is that while God necessarily
knows all things that might possibly exist, he does not necessarily
will the existence of all of them.
God necessarily exists; his essential substance can't
not exist. We, on the other hand, are contingent beings, so ours can. Therefore, we're distinct from God as he exists in his essential substance.
So, God's creative activity (let's call it GCA) is the substance of all contingent substances (CS). That means, GCA = CS.
But GCA is part of the substance of God, so CS has to be part of the substance of God. There still is only God and everything else is made from some aspect of his substance--it's not a different thing. What you've described is a Divine dream. Just like when I dream. When I dream, my will and imagination create the universe of my dream. And in that sub-real world, everything seems real, but it is all part of my mental substance. In my dream, if you keep splitting atoms in a particle accelerator, eventually, you're going to end up with my mind.
That's what I'm saying about God. Break atoms down enough and eventually, you're going to be looking at God.
This is partially correct, I think. God is
ipsum esse subsistens, meaning that he is subsistent Being himself. When God revealed his name to Moses as "I AM," he was revealing that his essential nature is pure, infinite Being. Everything that exists apart from God necessarily derives its being from God because God just
is Being. In other words, everything that
has being has as the source of its being him whose essential nature just
is Being. Unlike God, who cannot
not be (since his essential nature is Being), contingent beings like you and I can cease to be at any moment. All God has to do is cease to actively cause us to be, and we'll instantly be annihilated.
So we do, in a loose sense, "draw" our own substance from God's substance, since God's Being is the source of our being. But we do not participate in God's
essential substance (i.e. in his Being), since we can cease to be whenever God chooses.