Exodus 10:22

22 So Moses stretched out his hand toward heaven, and there was dense darkness in all the land of Egypt for three days.

Exodus 10:22 In-Context

20 But the Lord hardened Pharaoh's heart, and he would not let the Israelites go.
21 Then the Lord said to Moses, "Stretch out your hand toward heaven so that there may be darkness over the land of Egypt, a darkness that can be felt."
22 So Moses stretched out his hand toward heaven, and there was dense darkness in all the land of Egypt for three days.
23 People could not see one another, and for three days they could not move from where they were; but all the Israelites had light where they lived.
24 Then Pharaoh summoned Moses, and said, "Go, worship the Lord. Only your flocks and your herds shall remain behind. Even your children may go with you."
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.