Exodus 8:5-7

Young's Literal Translation

⁵ And Jehovah saith unto Moses, `Say unto Aaron, Stretch out thy hand, with thy rod, against the streams, against the rivers, and against the ponds, and cause the frogs to come up against the land of Egypt.'

⁶ And Aaron stretcheth out his hand against the waters of Egypt, and the frog cometh up, and covereth the land of Egypt;

⁷ and the scribes do so with their flashings, and cause the frogs to come up against the land of Egypt.