Exodus 10:19-21

New International Version

¹⁹ And the Lord changed the wind to a very strong west wind, which caught up the locusts and carried them into the Red Sea.^[a] Not a locust was left anywhere in Egypt. ²⁰ But the Lord hardened Pharaoh’s heart,^(A) and he would not let the Israelites go.

The Plague of Darkness

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