Exodus 9:27-30

27Then Pharaoh summoned Moses and Aaron. “This time I have sinned,” he said. “The LORD is righteous, and I and my people are wicked. 28Pray to the LORD, for there has been enough of God’s thunder and hail. I will let you go; you do not need to stay any longer.”

29Moses said to him, “When I have left the city, I will spread out my hands to the LORD. The thunder will cease, and there will be no more hail, so that you may know that the earth is the LORD’s. 30But as for you and your officials, I know that you still do not fear the LORD our God.”