25 Moses answered, “As soon as I leave you I will pray to the Lord that the swarms of flies may depart tomorrow from Pharaoh, his servants, and his people. Pharaoh, however, must not act deceitfully again and refuse to let the people go to sacrifice to the Lord.”
26 When Moses left Pharaoh, he prayed to the Lord;
27 and the Lord did as Moses had asked, removing the swarms of flies from Pharaoh, his servants, and his people. Not one remained.
28 But once more Pharaoh became obstinate and would not let the people go.