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.
Matthew Henry's Commentary on Exodus 7:3-12
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.