Exodus 8:8-10

8Then Pharaoh called for Moses and Aaron, and said, Entreat the LORD, that he may take away the frogs from me, and from my people; and I will let the people go, that they may sacrifice to the LORD.

9And Moses said to Pharaoh, Command me: when shall I entreat for thee, and for thy servants, and for thy people, to destroy the frogs from thee and thy houses, that they may remain in the river only?123

10And he said, To morrow. And he said, Be it according to thy word: that thou mayest know that there is none like the LORD our God.4