In the apocalyptic account in the book of Revelation, it talks about the “beast,” saying that from the point of the end times, he “once was and now is not.”
Compare that to the characterization of God, which states that he “was, and is, and is to come.”
That is a marked difference — and comforting one, too.
For God, that means his existence is in the past, the present, and the future. Whereas the beast has no future. The beast’s existence, therefore, is limited and finite, while God’s existence is unlimited and infinite. God will prevail; the beast will be defeated.