Two nightmares from when I was a child:
- Earth is suddenly in orbit around Jupiter and it's filling the sky, everything is bathed in Jupoter-shine light.
- Earth is visited by human-sized black amorphous blobs that just appear and disappear at random, destroy anything they intersect with, instill abject terror in anyone who sees them.
I mean, there probably was a carpenter called Jeshua... But you could probably say the same today.