Exodus 9:16-18

Revised Standard Version

¹⁶ but for this purpose have I let you live, to show you my power, so that my name may be declared throughout all the earth. ¹⁷ You are still exalting yourself against my people, and will not let them go. ¹⁸ Behold, tomorrow about this time I will cause very heavy hail to fall, such as never has been in Egypt from the day it was founded until now.