Daniel Chapter 5.
The source of "knees knocking in fear" phrase also.
From 536 BC, on the night the Persians and Medes captured Babylon.
If I remember correctly, they diverted the river, and walked in under the walls.
Enemies always find a weakness. That’s why I am always speaking out about sleep-walking into trouble.
I wasn’t aware of the knees knocking part of it. It’s been about fifty years since I read about it.