Exodus 8:29

Then Moses said , Behold , I am going out from you and I will plead with the Lord that the swarms of flies may depart from Pharaoh , from his servants , and from his people , tomorrow . Only let not Pharaoh cheat again by not letting the people go to sacrifice to the Lord .

Moses answered, “As soon as I leave you, I will pray to the Lord, and tomorrow the flies will leave Pharaoh and his officials and his people. Only let Pharaoh be sure that he does not act deceitfully again by not letting the people go to offer sacrifices to the Lord.”

And Moses said, Behold, I go out from thee, and I will intreat the Lord that the swarms of flies may depart from Pharaoh, from his servants, and from his people, to morrow : but let not Pharaoh deal deceitfully any more in not letting the people go to sacrifice to the Lord.