Exodus 10:21-29 NLT

21 Then the LORD said to Moses, "Lift your hand toward heaven, and a deep and terrifying darkness will descend on the land of Egypt."
22 So Moses lifted his hand toward heaven, and there was deep darkness over the entire land for three days.
23 During all that time the people scarcely moved, for they could not see. But there was light as usual where the people of Israel lived.
24 Then Pharaoh called for Moses. "Go and worship the LORD," he said. "But let your flocks and herds stay here. You can even take your children with you."
25 "No," Moses said, "we must take our flocks and herds for sacrifices and burnt offerings to the LORD our God.
26 All our property must go with us; not a hoof can be left behind. We will have to choose our sacrifices for the LORD our God from among these animals. And we won't know which sacrifices he will require until we get there."
27 So the LORD hardened Pharaoh's heart once more, and he would not let them go.
28 "Get out of here!" Pharaoh shouted at Moses. "Don't ever let me see you again! The day you do, you will die!"
29 "Very well," Moses replied. "I will never see you again."