Exodus 8:1

“And the Lord spake unto Moses, etc.] Either whilst the plague upon the waters continued, or immediately upon the removal of it: go unto Pharaoh, and say unto him, thus saith the Lord, let my people go, that they may serve me; mentioning neither time nor place, where, when, and how long they should serve him, for which their dismission was required, but insist on it in general.”

“PLAGUE OF FROGS. (Exo 8:1-15) the Lord spake unto Moses, Go unto Pharaoh--The duration of the first plague for a whole week must have satisfied all that it was produced not by any accidental causes, but by the agency of omnipotent power. As a judgment of God, however, it produced no good effect, and Moses was commanded to wait on the king and threaten him, in the event of his continued obstinacy, with the infliction of a new and different plague. As Pharaoh's answer is not given, it may be inferred to have been unfavorable, for the rod was again raised.”

“8:1-15 The second plague was the plague of frogs (8:2). The Egyptians gave special reverence to amphibians because of their ability to live in two different worlds; Egyptians were deeply concerned with survival in the next world, after death. God showed that frogs have no special hold on life. This plague is sometimes said to have been a natural result of whatever happened to make the Nile River uninhabitable. However, the extent of the plague was more than a natural result.”

“Go: Jer 1:17-19, Jer 15:19-21; Eze 2:6, Eze 2:7 Let my: Exo 3:12, Exo 3:18, Exo 5:1, Exo 7:16 Exodus 8:2”

“The plague of Frogs, or the second plague, also proceeded from the Nile, and had its natural origin in the putridity of the slimy Nile water, whereby the marsh waters especially became filled with thousands of frogs. צפרדּע is the small Nile frog, the Dofda of the Egyptians, called rana Mosaica or Nilotica by Seetzen, which appears in large numbers as soon as the waters recede. These frogs (הצּפרדּע in Exo 8:6, used collectively) became a penal miracle from the fact that they came out of the water in unparalleled numbers, in consequence of the stretching out of Aaron's staff over the waters of the Nile, as had been foretold to the king, and that they not only penetrated into the houses and…”