29. And Moses answered, Behold, as I go out from thy presence, I will intreat the Lord that the swarms of flies may depart from Pharaoh, from his slaves, and from his people tomorrow; if Pharaoh will not deal deceitfully any more in not letting the people go to sacrifice to the Lord.
30. Then Moses went out from Pharaoh, and prayed unto the Lord.
31. And the Lord did according to the word of Moses, and he removed the swarms of flies from Pharaoh, from his slaves, and from his people; there remained not one.
32. And Pharaoh even hardened his heart this time and did not let the people go.