Exodus 8:22; Exodus 8:29; Exodus 22:20

Exodus 8:22

22 And I will sever in that day the land of Goshen, in which my people dwell, that no swarms of flies shall be there; to the end thou mayest know that I am the LORD in the midst of the earth.

Exodus 8:29

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.

Exodus 22:20

20 He that sacrificeth unto any god, save unto the LORD only, he shall be utterly destroyed.