On the way the LORD said to Moses: When you get to Egypt, go to the king and work the miracles I have shown you. But I will make him so stubborn that he will refuse to let my people go.
Warn the king that the Nile will be full of frogs, and from there they will spread into the royal palace, including the king's bedroom and even his bed. Frogs will enter the homes of his officials and will find their way into ovens and into the bowls of bread dough.
“All right,” Moses answered. “You choose the time when I am to pray for the frogs to stop bothering you, your officials, and your people, and for them to leave your houses and be found only in the river.”