71 Then the Lord said to Moses, "Pay close attention to this. I will make you seem like God to Pharaoh, and your brother, Aaron, will be your prophet. 2 Tell Aaron everything I command you, and Aaron must command Pharaoh to let the people of Israel leave his country. 3 But I will make Pharaoh's heart stubborn so I can multiply my miraculous signs and wonders in the land of Egypt. 4 Even then Pharaoh will refuse to listen to you. So I will bring down my fist on Egypt. Then I will rescue my forces-my people, the Israelites-from the land of Egypt with great acts of judgment. 5 When I raise my powerful hand and bring out the Israelites, the Egyptians will know that I am the Lord ." 6 So Moses and Aaron did just as the Lord had commanded them. 7 Moses was eighty years old, and Aaron was eighty-three when they made their demands to Pharaoh.
8 Then the Lord said to Moses and Aaron, 9 "Pharaoh will demand, 'Show me a miracle.' When he does this, say to Aaron, 'Take your staff and throw it down in front of Pharaoh, and it will become a serpent. '" 10 So Moses and Aaron went to Pharaoh and did what the Lord had commanded them. Aaron threw down his staff before Pharaoh and his officials, and it became a serpent! 11 Then Pharaoh called in his own wise men and sorcerers, and these Egyptian magicians did the same thing with their magic. 12 They threw down their staffs, which also became serpents! But then Aaron's staff swallowed up their staffs. 13 Pharaoh's heart, however, remained hard. He still refused to listen, just as the Lord had predicted.
14 Then the Lord said to Moses, "Pharaoh's heart is stubborn, and he still refuses to let the people go. 15 So go to Pharaoh in the morning as he goes down to the river. Stand on the bank of the Nile and meet him there. Be sure to take along the staff that turned into a snake. 16 Then announce to him, 'The Lord, the God of the Hebrews, has sent me to tell you, "Let my people go, so they can worship me in the wilderness." Until now, you have refused to listen to him. 17 So this is what the Lord says: "I will show you that I am the Lord ." Look! I will strike the water of the Nile with this staff in my hand, and the river will turn to blood. 18 The fish in it will die, and the river will stink. The Egyptians will not be able to drink any water from the Nile.'" 19 Then the Lord said to Moses: "Tell Aaron, 'Take your staff and raise your hand over the waters of Egypt-all its rivers, canals, ponds, and all the reservoirs. Turn all the water to blood. Everywhere in Egypt the water will turn to blood, even the water stored in wooden bowls and stone pots.'" 20 So Moses and Aaron did just as the Lord commanded them. As Pharaoh and all of his officials watched, Aaron raised his staff and struck the water of the Nile. Suddenly, the whole river turned to blood!
Matthew Henry's Commentary on Exodus 7:1-20
Commentary on Exodus 7:1-7
(Read Exodus 7:1-7)
God glorifies himself. He makes people know that he is Jehovah. Israel is made to know it by the performance of his promises to them, and the Egyptians by the pouring out of his wrath upon them. Moses, as the ambassador of Jehovah, speaking in his name, laid commands upon Pharaoh, denounced threatenings against him, and called for judgments upon him. Pharaoh, proud and great as he was, could not resist. Moses stood not in awe of Pharaoh, but made him tremble. This seems to be meant in the words, Thou shalt be a god unto Pharaoh. At length Moses is delivered from his fears. He makes no more objections, but, being strengthened in faith, goes about his work with courage, and proceeds in it with perseverance.
Commentary on Exodus 7:8-13
(Read Exodus 7:8-13)
What men dislike, because it opposes their pride and lusts, they will not be convinced of; but it is easy to cause them to believe things they wish to be true. God always sends with his word full proofs of its Divine authority; but when men are bent to disobey, and willing to object, he often permits a snare to be laid wherein they are entangled. The magicians were cheats, trying to copy the real miracles of Moses by secret sleights or jugglings, which to a small extent they succeeded in doing, so as to deceive the bystanders, but they were at length obliged to confess they could not any longer imitate the effects of Divine power. None assist more in the destruction of sinners, than such as resist the truth by amusing men with a counterfeit resemblance of it. Satan is most to be dreaded when transformed into an angel of light.
Commentary on Exodus 7:14-25
(Read Exodus 7:14-25)
Here is the first of the ten plagues, the turning of the water into blood. It was a dreadful plague. The sight of such vast rolling streams of blood could not but strike horror. Nothing is more common than water: so wisely has Providence ordered it, and so kindly, that what is so needful and serviceable to the comfort of human life, should be cheap and almost every where to be had; but now the Egyptians must either drink blood, or die for thirst. Egypt was a pleasant land, but the dead fish and blood now rendered it very unpleasant. It was a righteous plague, and justly sent upon the Egyptians; for Nile, the river of Egypt, was their idol. That creature which we idolize, God justly takes from us, or makes bitter to us. They had stained the river with the blood of the Hebrews' children, and now God made that river all blood. Never any thirsted after blood, but sooner or later they had enough of it. It was a significant plague; Egypt had great dependence upon their river, Zechariah 14:18; so that in smiting the river, they were warned of the destruction of all the produce of their country. The love of Christ to his disciples changes all their common mercies into spiritual blessings; the anger of God towards his enemies, renders their most valued advantages a curse and a misery to them. Aaron is to summon the plague by smiting the river with his rod. It was done in the sight of Pharaoh and his attendants, for God's true miracles were not performed as Satan's lying wonders; truth seeks no corners. See the almighty power of God. Every creature is that to us which he makes it to be water or blood. See what changes we may meet with in the things of this world; what is always vain, may soon become vexatious. See what mischievous work sin makes. If the things that have been our comforts prove our crosses, we must thank ourselves. It is sin that turns our waters into blood. The plague continued seven days; and in all that time Pharaoh's proud heart would not let him desire Moses to pray for the removal of it. Thus the hypocrites in heart heap up wrath. No wonder that God's anger is not turned away, but that his hand is stretched out still.