'Darkness' in the Bible

Then the Lord said to Moses, “Stretch out your hand toward the sky, so that darkness may come over the land of Egypt, a darkness which [is so awful that it] may be felt.”

So Moses stretched out his hand toward the sky, and for three days a thick darkness was all over the land of Egypt [no sun, no moon, no stars].

So it came between the camp of Egypt and the camp of Israel. It was a cloud along with darkness [even by day to the Egyptians], but it gave light by night [to the Israelites]; so one [army] did not come near the other all night.

So the people stood at a [safe] distance, but Moses approached the thick cloud where God was.