Exodus 8

2 I'll have to look this up sometime, but I believe that one of the Egyptian gods was represented as a frog.
6 Again the Nile and the bodies of water were to be the source of this plague.
7 Like pulling a rabbit out of a hat, the magicians were able to bring frogs out of water.
8 Pharaoh might not have been ready to believe Pharaoh, but the plague of frogs was utterly disgusting and he was not able to escape these slimy and noisy creatures. Again the magicians were unable to make the frogs disappear, but Pharaoh felt that Moses might be able to call off this "enchantment." Pharaoh was willing to say anything to get rid of the frogs. We will see soon that Pharaoh was not sincere.
9 So Pharaoh would know that it would not be a fluke when the frogs died, Moses challenged Pharaoh to name a time for the frogs to die.
10 It is interesting to note that Pharaoh was willing to wait another miserable night with the frogs. He could have said "immediately," but he decided to wait. When God offers to forgive or heal us, we should allow Him to work immediately, not put it off until tomorrow.

Moses immediately points to God so that Pharaoh will recognize that Moses was not a magician working an illusion, but that there is a real God that controls life and death.

12 Even though God told Moses He would remove the frogs and Moses knew that He would do as He promised, Moses still prayed. God wants us to pray and talk with him. God wants us to talk with Him about everything. God does not forget His promises, but prayer reminds us to remember His promises. Moses really did pray for his enemies.
15 Pharaoh could not deny that something amazing had happened, but he was not ready to give up his slave labor force yet.
16 The next plague was done without warning Pharaoh first. At this point it was apparent that Pharaoh would not listen, nor could he be trusted to keep his word. As God had predicted, Pharaoh would not grant permission to leave, but he would eventually force the Israelites to leave because of the plagues that God brought about.
18 I am not sure why making lice appear was beyond the illusionists' capabilities. Perhaps they could not find anything that was lice-free to make lice "appear" on.
19 At this point the magicians are convinced that this "God" of the Hebrews exists and that He is indeed working these miracles. The magicians knew they were up against Someone bigger than they were.
20 Moses was to confront Pharaoh again. This is not so much a warning as it was to be an explanation.
21 Up until now it appears that some or all of these plagues affected the Israelites as well as the Egyptians, but from this point forward, the plagues would be specifically directed at the Egyptians. It would be apparent to all that God was protecting the Israelites. Why would God have plagued His people as well as the Egyptians? First, the plagues would be a witness to both groups that He was indeed powerful. Secondly, it would give them a taste of His wrath so that they would obey Him in the future. It is also important to note that the most fearful plagues were placed upon the Egyptians. The increasing severity of the plagues would quickly enhance the "grassroots" movement among the Egyptians to convince Pharaoh to get rid of the Israelites who were "causing" so many problems.
24 Flies would encompass both the "grossness" of the frogs and the painfulness of the lice. In addition, the flies would carry diseases and infest the food with maggots.
25 Pharaoh finally relents and would allow the Israelites to make a sacrifice to God within the land.
26 However, as was seen earlier, the Egyptians considered the Hebrews disgusting and would look down on their sacrificial ritual. God would not be pleased with this attitude. Those who were to witness this sacrifice were to approach Him with reverence, not contempt. In addition, the Egyptians might try to create a religious hysteria and attempt to kill the Hebrews while they worshiped.
27 Three days journey sounded like a reasonable compromise.
31 This was an amazing miracle. One day the ground was black from flies, and the next day not a single one remained.
32 But again Pharaoh's memory is quick to fade and he becomes unimpressed by this disappearance. But again this falls in line with God's overall plan. He did not merely want a three-day journey for the Israelites to worship Him, He wanted a complete and permanent deliverance of the people.