Exodus 8:29
"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."
Cross References (ranked by relevance)
Exodus 8:15
But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said.
Exodus 8:8
Then Pharaoh called for Moses and Aaron, and said, Intreat the LORD, that he may take away the frogs from me, and from my people; and I will let the people go, that they may do sacrifice unto the LORD.
Galatians 6:7
Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap.
Psalm 66:3
Say unto God, How terrible art thou in thy works! through the greatness of thy power shall thine enemies submit themselves unto thee.