Exodus 7:15 Get thee unto Pharaoh in the morning; lo, he goeth out unto the water; and thou shalt stand by the river's brink against he come; and the rod which was turned to a serpent shalt thou take in thine hand. 16 And thou shalt say unto him, The Lord God of the Hebrews hath sent me unto thee, saying, Let my people go, that they may serve me in the wilderness: and, behold, hitherto thou wouldest not hear.
[Patriarchs & Prophets pp 264>265] Satan hoped also to shake the faith of Moses and Aaron in the divine origin of their mission, that his instruments might prevail. He was unwilling that the children of Israel should be released from bondage to serve the living God. But the prince of evil had a still deeper object in manifesting his wonders through the magicians. He well knew that Moses, in breaking the yoke of bondage from off the children of Israel, pre-figured Christ, who was to break the reign of sin over the human family.
He knew that when Christ should appear, mighty miracles would be wrought as an evidence to the world that God had sent Him. Satan trembled for his power. By counterfeiting the work of God through Moses, he hoped not only to prevent the deliverance of Israel, but to exert an influence through future ages to destroy faith in the miracles of Christ. Satan is constantly seeking to counterfeit the work of Christ and to establish his own power and claims. He leads men to account for the miracles of Christ by making them appear to be the result of human skill and power.
In many minds he thus destroys faith in Christ as the Son of God, and leads them to reject the gracious offers of mercy through the plan of redemption. Moses and Aaron were directed to visit the riverside next morning, where the king was accustomed to repair. The overflowing of the Nile being the source of food and wealth for all Egypt, the river was worshiped as a god, and the monarch came thither daily to pay his devotions. Here the two brothers again repeated the message to him, and then they stretched out the rod and smote upon the water.
Exodus 7:17 Thus saith the Lord, In this thou shalt know that I am the Lord: behold, I will smite with the rod that is in mine hand upon the waters which are in the river, and they shall be turned to blood. 18 And the fish that is in the river shall die, and the river shall stink; and the Egyptians shall loathe to drink of the water of the river.
May The Lord add His blessing to the study of His word. God bless!