Exodus 8:27-29

American Standard Version

²⁷ We will go three days’ journey into the wilderness, and sacrifice to Jehovah our God, as he shall command us. ²⁸ And Pharaoh said, I will let you go, that ye may sacrifice to Jehovah your God in the wilderness; only ye shall not go very far away: entreat for me. ²⁹ And Moses said, Behold, I go out from thee, and I will entreat Jehovah that the swarms of flies may depart from Pharaoh, from his servants, and from his people, to-morrow: only let not Pharaoh deal deceitfully any more in not letting the people go to sacrifice to Jehovah.