Exodus 9:27-35

27So Pharaoh sent and summoned Moses and Aaron and said to them, “I have sinned this time! The Lord is righteous, and I and my people are guilty.

28Pray to the Lord, for the mighty thunderings and hail are too much! I will release you and you will stay no longer.”

29Moses said to him, “When I leave the city I will spread my hands to the Lord, the thunder will cease, and there will be no more hail, so that you may know that the earth belongs to the Lord.

30But as for you and your servants, I know that you do not yet fear the Lord God.”

31(Now the flax and the barley were struck by the hail, for the barley had ripened and the flax was in bud.

32But the wheat and the spelt were not struck, for they are later crops.)

33So Moses left Pharaoh, went out of the city, and spread out his hands to the Lord, and the thunder and the hail ceased, and the rain stopped pouring on the earth.

34When Pharaoh saw that the rain and hail and thunder ceased, he sinned again: both he and his servants hardened their hearts.

35So Pharaoh’s heart remained hard, and he did not release the Israelites, as the Lord had predicted through Moses.