Exodus 9:16-18

New Revised Standard Version, Anglicised

¹⁶ But this is why I have let you live: to show you my power, and to make my name resound through all the earth. ¹⁷ You are still exalting yourself against my people, and will not let them go. ¹⁸ 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.