TSK · Numbers 14:20

Moses said to Pharaoh, "I give you the honor of setting the time that I should pray for you, and for your servants, and for your people, that the frogs be destroyed from you and your houses, and remain in the river only."

Therefore he said that he would destroy them, had Moses, his chosen, not stood before him in the breach, to turn away his wrath, so that he wouldn't destroy them.

Confess your offenses to one another, and pray for one another, that you may be healed. The insistent prayer of a righteous person is powerfully effective.