Exodus 8:3 - Coke's Commentary on the Holy Bible

And the river shall bring forth— That is, the river Nile, with all its streams, ponds, lakes, and, in a word, the whole body of waters which proceeded from, and were formed by it alone in Egypt. The Nile was remarkably fruitful of frogs; but a quantity so immense as was produced instantaneously on this occasion, undoubtedly indicated a miraculous power. The expressions, into thy house, thy bed, thine ovens, &c. declare, that the swarm should be so great as to throng, contrary to the nature of the reptile, into the most frequented and the dryest places. And the fourth verse, limiting this plague to Pharoah and his people, shews again how graciously God preserved the Israelites from it. A distinction which, one would have thought, should have caused the blindest to see, and the hardest to feel.