Exodus 8:1-3

Young's Literal Translation

8 And Jehovah saith unto Moses, `Go in unto Pharaoh: and thou hast said unto him, Thus said Jehovah, Send My people away, and they serve Me;

² and if thou art refusing to send away, lo, I am smiting all thy border with frogs;

³ and the River hath teemed [with] frogs, and they have gone up and gone into thy house, and into the inner-chamber of thy bed, and on thy couch, and into the house of thy servants, and among thy people, and into thine ovens, and into thy kneading-troughs;