Then God told Moses that He was going to send him to deliver His people from the Egyptians and lead them back to their own country; and He sent Aaron, the brother of Moses, with him. Then Moses said to God, the king of Egypt will not let the people go, and what can I do? God gave Moses two signs or miracles to show the king, so that he could know that Moses was really sent by Him. He gave him power to change a rod into a serpent, and back again into a rod; power also to bring a disease instantly upon his hand, and to heal it instantly. (Ex. 4). Do these, said Almighty God, in the presence of the king. Then Moses and Aaron went to the king and did as God commanded them; and when the rod of Aaron became a serpent, the king's magicians--that is, men who do apparently wonderful things by sleight of hand or the power of the devil--cast their rods upon the ground, and they also became serpents--not that their rods were changed into serpents, but the devil, who was helping them, took away instantly their rods and put real serpents in their place--but Aaron's serpent swallowed them up. (Ex. 7). After these signs the king would not let the people go with Moses; for God permitted the king's heart to be hardened, so that all the Egyptians might see the great work God was going to do for His people. Then God sent the ten plagues upon the Egyptians, while the Israelites--God's people--suffered nothing from these plagues. The first plague was blood. All the water in the land was converted into blood. (Ex. 7). The king then sent for Moses and promised that if he would take away the plague he would allow all the people to depart. Moses prayed to God, and the plague was removed. But after it was taken away the king's heart was hardened again and he would not keep his promise. Just as people in sickness, distress, or danger sometimes promise God they will lead better lives if only He will help them, and when they are saved they do not keep their promises, so did Pharao; and therefore God sent another plague. The second plague was frogs. Great numbers of them came out of the rivers and lakes, and filled all the houses of the Egyptians, and crawled into their food, beds, etc. Again the king sent for Moses and did as before; and again Moses prayed, and all the frogs went back into the waters or died. (Ex. 8). But the king again hardened his heart and did not keep his promise. The third plague was sciniphs (Ex. 8)--very small flies, that filled the land. Imagine our country filled with mosquitoes so numerous that you could scarcely walk through them; it would be a dreadful plague. As it is, two or three might cause you considerable annoyance, and pain: what then if there were millions doubly venomous, because sent to punish you? So these little flies must have greatly punished the Egyptians. The fourth plague was flies that filled the land and covered everything, to the great disgust of the people. The fifth plague was murrain--a disease that