Exodus 8:2

2 If you refuse to let them go, I will send a plague of frogs on your whole country.

Read Exodus 8:2 Using Other Translations

And if thou refuse to let them go, behold, I will smite all thy borders with frogs:
But if you refuse to let them go, behold, I will plague all your country with frogs.
If you refuse to let them go, I will send a plague of frogs across your entire land.