The Plague of Darkness

21 Then the LORD said to Moses, “Stretch out your hand toward the sky so that darkness spreads over Egypt—darkness that can be felt.”

Read Exodus 10:21 Using Other Translations

And 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.
Then the LORD said to Moses, "Stretch out your hand toward heaven, that there may be darkness over the land of Egypt, a darkness to be felt."
Then the LORD said to Moses, “Lift your hand toward heaven, and the land of Egypt will be covered with a darkness so thick you can feel it.”