Exodus 8:27-32 NIV

27 We must take a three-day journey1 into the desert to offer sacrifices2 to the LORD our God, as he commands us."

References for Exodus 8:27

28 Pharaoh said, "I will let you go to offer sacrifices to the LORD your God in the desert, but you must not go very far. Now pray3 for me."

References for Exodus 8:28

29 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 be sure that Pharaoh does not act deceitfully4 again by not letting the people go to offer sacrifices to the LORD."

References for Exodus 8:29

30 Then Moses left Pharaoh and prayed to the LORD,5

References for Exodus 8:30

31 and the LORD did what Moses asked: The flies left Pharaoh and his officials and his people; not a fly remained.
32 But this time also Pharaoh hardened his heart6 and would not let the people go.

References for Exodus 8:32