And the LORD said unto Moses, When you go to return into Egypt, see that you do all those wonders before Pharaoh, whom I have put in your hand: but I will harden his heart, that he shall not let the people go.
And the river shall bring forth frogs abundantly, which shall go up and come into your house, and into your bedchamber, and upon your bed, and into the house of your servants, and upon your people, and into your ovens, and into your kneading troughs:
And Moses said unto Pharaoh, You tell me: when shall I entreat for you, and for your servants, and for your people, to destroy the frogs from you and your houses, that they may remain in the river only?