What if the universe is suffused with meaning and purpose by a just and benevolent god, and you have just accidentally fallen through the cracks? How would you

What if the universe is suffused with meaning and purpose by a just and benevolent god, and you have just accidentally fallen through the cracks? How would you know? In other words, what is the falsifiable hypothesis of nihilism? If you cannot answer that, your nihilism is just so much mystical gobbledygook.