Exodus 9:16-21

16But indeed for this very reason I have allowed you to live, in order to show you My power and in order that My name may be proclaimed throughout all the earth.

17Since you are still [arrogantly] exalting yourself [in defiance] against My people by not letting them go,

18hear this: tomorrow about this time I will send a very heavy and dreadful hail, such as has not been seen in Egypt from the day it was founded until now.

19Now therefore send [a message], bring your livestock and whatever you have in the field to safety. Every man and animal that is in the field and is not brought home shall be struck by the hail and shall die.” ’ ”

20Then everyone among the servants of Pharaoh who feared the word of the Lord made his servants and his livestock flee into the houses and shelters;

21but everyone who ignored and did not take seriously the word of the Lord left his servants and his livestock in the field.