10:21And the LORD said unto Moses, Stretch out thine hand toward heaven, that there may be darkness over the land of Egypt, even darkness which may be felt.

10:22And Moses stretched forth his hand toward heaven; and there was a thick darkness in all the land of Egypt three days:

10:23They saw not one another, neither rose any from his place for three days: but all the children of Israel had light in their dwellings.

14:19And the angel of God, which went before the camp of Israel, removed and went behind them; and the pillar of the cloud went from before their face, and stood behind them:

14:20And it came between the camp of the Egyptians and the camp of Israel; and it was a cloud and darkness to them, but it gave light by night to these: so that the one came not near the other all the night.