'Darkness' in the Bible

Then the Lord said to Moses, “Stretch out your hand toward heaven, and there will be darkness over the land of Egypt, a darkness that can be felt.”

So Moses stretched out his hand toward heaven, and there was thick darkness throughout the land of Egypt for three days.

It came between the Egyptian and Israelite forces. The cloud was there in the darkness, yet it lit up the night. So neither group came near the other all night long.

And the people remained standing at a distance as Moses approached the thick darkness where God was.