If I shut up the heavens so that there is no rain, or if I command the locust to devour the land, or if I send a plague among My people, and My people who are called by My name humble themselves, and pray and seek My face, and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land.  Now My eyes will be open and My ears attentive to the prayer offered in this place.

(2 Chronicles 7:13-15- NASB)