Exodus 8:28-30

Young's Literal Translation

²⁸ And Pharaoh saith, `I send you away, and ye have sacrificed to Jehovah your God in the wilderness, only go not very far off; make ye supplication for me;'

²⁹ and Moses saith, `Lo, I am going out from thee, and have made supplication unto Jehovah, and the beetle hath turned aside from Pharaoh, from his servants, and from his people -- to-morrow, only let not Pharaoh add to deceive -- in not sending the people away to sacrifice to Jehovah.'

³⁰ And Moses goeth out from Pharaoh, and maketh supplication unto Jehovah,