27. We will go a three days' journey into the wilderness and sacrifice to the Lord our God, as He will command us.
28. So Pharaoh said, I will let you go, that you may sacrifice to the Lord your God in the wilderness; only you shall not go very far away. Entreat [your God] for me.
29. Moses said, I go out from you, and I will entreat the Lord that the swarms [of bloodsucking gadflies] may depart from Pharaoh, his servants, and his people tomorrow; only let not Pharaoh deal deceitfully any more in not letting the people go to sacrifice to the Lord.
30. So Moses went out from Pharaoh and entreated the Lord.
31. And the Lord did as Moses had spoken: He removed the swarms [of attacking gadflies] from Pharaoh, from his servants, and his people; there remained not one.
32. But Pharaoh hardened his heart and made it stubborn this time also, nor would he let the people go.