So Aaron stretched out his hand over the waters of Egypt, and the frogs came up and covered the land of Egypt.
God chose contemptible frogs to strike down a haughty king, magnifying His power over all creation and humbling Pharaoh's pride. What a mortification for a monarch to be forced to his knees by creatures a child can master, yet whose numbers made all his chariots and horsemen helpless.
AI summary
Commenting on Exodus 8:1-15
And the magicians did so with their enchantments, &c. By their secret wiles and juggling tricks: and brought up frogs upon the land of Egypt, that is, some few, as a proof of their art and skill, and to show that Moses and Aaron did but what they could do; but what they did either were only in appearance, deceiving the sight of Pharaoh and...
And Aaron stretched out his hand over the waters of Egypt; and the frogs came up, and covered the land of Egypt. (b) But Goshen, where God's people dwelt, was excepted.