The frogs were produced out of the waters, but the lice out of the dust of the earth; for out of any part of the creation God can fetch a scourge wherewith to correct those that rebel against him.
Related Commentaries of Exodus 8:17
Exodus 8:17
17 And they did so; for Aaron stretched out his hand with his rod, and smote the dust of the earth, and it became lice in man, and in beast; all the dust of the land became lice throughout all the land of Egypt.