Exodus 9:16-21

But for this purpose I have raised you up, to show you my power, so that my name may be proclaimed in all the earth. You are still exalting yourself against my people and will not let them go. Behold, about this time tomorrow I will cause very heavy hail to fall, such as never has been in Egypt from the day it was founded until now. Now therefore send, get your livestock and all that you have in the field into safe shelter, for every man and beast that is in the field and is not brought home will die when the hail falls on them.”’” Then whoever feared the word of the LORD among the servants of Pharaoh hurried his slaves and his livestock into the houses, but whoever did not pay attention to the word of the LORD left his slaves and his livestock in the field.