Exodus 9:30

27 Pharaoh sent, and called for Moses and Aaron, and said to them, "I have sinned this time. Yahweh is righteous, and I and my people are wicked.

28 Pray to Yahweh; for there has been enough of mighty thunderings and hail. I will let you go, and you shall stay no longer."

29 Moses said to him, "As soon as I have gone out of the city, I will spread abroad my hands to Yahweh. The thunders shall cease, neither shall there be any more hail; that you may know that the earth is Yahweh`s.

30 But as for you and your servants, I know that you will not yet fear Yahweh God."

31 The flax and the barley were struck, for the barley was in the ear, and the flax was in bloom.

32 But the wheat and the spelt were not struck, for they had not grown up.

33 Moses went out of the city from Pharaoh, and spread abroad his hands to Yahweh; and the thunders and hail ceased, and the rain was not poured on the earth.