I will sever in that day— I will distinguish, &c. See Exodus 8:23. The LXX has it παραδοξασω; a word which, like the Hebrew, implies a remarkable and glorious distinction. The cause of God's making such a distinction, as well as working these amazing prodigies, is never forgotten by the sacred writer; to the end that thou mayest know that I am the Lord in the midst of the earth: the Sovereign and Uncontrolled Ruler of the whole world.
Related Commentaries of Exodus 8:22
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.