Exodus 10:19

16 Then Pharaoh quickly sent for Moses and Aaron, and said, I have done evil against the Lord your God and against you.

17 Let me now have forgiveness for my sin this time only, and make prayer to the Lord your God that he will take away from me this death only.

18 So he went out from Pharaoh and made prayer to the Lord.

19 And the Lord sent a very strong west wind, which took up the locusts, driving them into the Red Sea; not one locust was to be seen in any part of Egypt.

20 But the Lord made Pharaoh's heart hard, and he did not let the children of Israel go.

21 And the Lord said to Moses, Let your hand be stretched out to heaven, and all the land of Egypt will be dark, so that men will be feeling their way about in the dark.

22 And when Moses' hand was stretched out, dark night came over all the land of Egypt for three days;