Under no circumstances, earthly or divine, would such an event occur. Not if the sky fell, not if the sun burned out, not if the earth split wide open down the middle and swallowed civilization whole.
Never. No. Absolutely not. I would never dream of it. Not in a million years. Not in any conceivable reality, adjacent timeline or parallel universe. Perish the thought. Banish it from your mind immediately. The sheer audacity of the premise is giving me vertigo.