Exodus 9:27-30

27And Pharaoh sent, and called Moses and Aaron, and said to them, I have sinned this time: Jehovah is the righteous [one], but I and my people are the wicked [ones].

28Intreat Jehovah that it may be enough, that there be no more thunder of 1God and hail; and I will let you go, and ye shall stay no longer!

29And Moses said to him, When I go out of the city, I will spread out my hands to Jehovah: the thunder will cease, and there will be no more hail; that thou mayest know that the earth is Jehovah's.

30But as to thee and thy bondmen, I know that ye do not yet fear Jehovah Elohim.