While Moses was traveling back to Egypt, God spoke to him. God said, “When you talk to Pharaoh remember to show him all the miracles that I have given you the power to do. But I will cause Pharaoh to be very stubborn. He will not let the people go.
The Nile River will be filled with frogs. They will come from the river and enter your houses. They will be in your bedrooms, and in your beds. The frogs will be in the houses of your officials and in your ovens and in your jars of water.
Moses said to Pharaoh, “Tell me when you want the frogs to go away. I will pray for you, your people, and your officials. Then the frogs will leave you and your houses. The frogs will remain only in the river. {When do you want the frogs to leave?}”