the punishment of the Egyptians, how much more should we be ready to expose our lives to the fire for the greater glory of His Name!"[179] And the zealous frogs were not permitted to go unrewarded. While the others were destroyed from Pharaoh and the Egyptian houses at the moment appointed as the last of the plague, God saved those in the bake-ovens alive, the fire had no power to do them the least harm.[180] Now, although the Egyptian magicians also brought up frogs upon the land of Egypt through the help of demons, Pharaoh nevertheless declared himself ready to let the people go, to sacrifice unto the Lord. The difference between this plague and the first was, that water turned into blood had not caused him any personal inconvenience, while the swarms of frogs inflicted physical suffering, and he gave the promise to Moses to let Israel go, in the hope of ridding himself of the pain he experienced. And Moses in turn promised to entreat God for him on the following day. It could not be done at once, because the seven days' term had not yet elapsed. The prayer offered by Moses in behalf of Pharaoh was granted, all the frogs perished, and their destruction was too swift for them to retire to the water. Consequently the whole land was filled with the stench from the decaying frogs, for they had been so numerous that every man of the Egyptians gathered together four heaps of them.[181] Although the frogs had filled all the market-places and stables and dwellings, they retreated before the Hebrews as if they had been able to distinguish between the two nations, and had known which of them it was proper to abuse, and which to treat with consideration.[182] Beside sparing the Hebrews in the land of Egypt, the frogs kept within the limits of the land, in no wise trenching upon the territory of the neighboring nations. Indeed, they were the means of settling peaceably an old boundary dispute between Egypt and Ethiopia. Wherever they appeared, so far extended the Egyptian domain; all beyond their line belonged to Ethiopia. Pharaoh was like the wicked that cry to God in their distress, and when their fortunes prosper slide back into their old, impious ways. No sooner had the frogs departed from him, his houses, his servants, and his people, than he hardened his heart again, and refused to let Israel go. Thereupon God sent the plague of the lice, the last of those brought upon Egypt through the mediation of Aaron. Moses could have no part in it, "for," said God, "the earth that afforded thee protection when she permitted thee to hide the slain Egyptian, shall not suffer through thine hand."[183]