The Seventh Plague: Thunder and Hail

Then the Lord said to Moses, "Rise up early in the morning and present yourself before Pharaoh, and say to him, 'Thus says the Lord, the God of the Hebrews: Let my people go, so that they may worship me.
For this time I will send all my plagues upon you yourself, and your officials, and upon your people, so that you may know that there is no one like me in all the earth.
For by now I could have stretched out my hand and struck you and your people with pestilence, and you would have been cut off from the earth.
But this is why I have let you live: to show my power, and to make my name resound through all the earth.
You are still exalting yourself against my people, and will not let them go.
Tomorrow at this time I will cause the heaviest hail to fall that has ever fallen in Egypt from the day it was founded until now.
Send, therefore, and have your livestock and everything that you have in the open field brought to a secure place; every human or animal that is in the open field and is not brought under shelter will die when the hail comes down upon them.'"
Those officials of Pharaoh who feared the word of the Lord hurried their slaves and livestock off to a secure place.
Those who did not regard the word of the Lord left their slaves and livestock in the open field.