The snake’s other two predictions also come true. He says that the man and the woman will not die and that their eyes will be opened. Genesis 3:7 confirms the latter: “Then the eyes of them both were opened.” What about the former — the bit about not dying? Well, clearly they don’t die, right? Some (even some well-known biblical scholars) argue for a metaphorical death or a death of innocence or a loss of immortality and so on. But there’s really no getting around Yahweh’s statement, “On the day that you eat of it, you will surely die.” I could go into excruciatingly painful detail on this, but, given the way it’s worded in Hebrew, it has to mean immediate, physical death. And that is precisely what they DON’T experience. Thus, this prediction on the part of the snake also comes true.
I would say that the whole story about the Garden of Eden is really not a creation story, per se, but a story that’s much more like Kipling’s “How the Leopard Got His Spots” (Kipling called his stories like this “Just-So Stories”). The Garden of Eden story explains how humans came to be as they are now. They’re not animals (naked and ignorant), and they’re not gods (immortal). They are, instead “like” gods — that is, they have knowledge, especially the knowledge about what’s good and what’s evil (or, at least, that’s what the story’s claiming, despite how many folks we might know who don’t seem to know the difference between much of anything). Perhaps an appropriate title for the story would be “How the Humans Got Their Knowledge.”