Midrash Tanchuma, Vaera 3 | Jewish Mythology

When Pharaoh shall speak unto you, saying: “Show a wonder for you” (Exod. 7:9). He will be making a reasonable request to you. You find in the case of Noah, that though He said to him, after He saved him from the flood, Neither shall there be anymore a flood (Gen. 9:11), Noah demanded a sign, and God assured him: I have set my bow in the cloud (ibid., v. 13). Similarly, when Hezekiah was sick, the Holy One, blessed be He, sent Isaiah to him and he said: Thus saith the Lord, the God of David, thy father: “I have heard thy prayer, I have seen thy tears; behold, I will heal thee; on the third day thou shalt go up unto the house of the Lord” (II Kings 20:5). But he replied: What shall be the sign? (ibid., v. 8), and He answered: This shall be the sign unto thee from the Lord, that the Lord will do the thing that He hath spoken: shall the shadow go forward ten degrees, or go back ten degrees? (ibid., v. 9). Likewise, Joshua, the high priest, was told: Hear now, O Joshua the high priest, … for they are men that are a sign (Zech. 3:8). Since the righteous demanded signs, how much more did the wicked Pharaoh (have the right to do so). Hence, when Pharaoh says unto you: Show a wonder for you (he will be making a reasonable request).

And Aaron forthwith cast down his rod before Pharaoh and before his servants, and it became a serpent (Exod. 7:10). Whereupon Pharaoh said: “Is this the full power of your God? Why, my magicians travel throughout the world performing such feats.” Then Pharaoh called also (ibid., v. 11) the youths, and babes of five, yea, even of four years, and each of them cast his rod. It is written: Pharaoh called also because he disdained at first to summon his magicians and sorcerers. Our sages of blessed memory said: He actually performed a great miracle with that rod. When one serpent is able to swallow other serpents, that is not unusual, but this serpent turned itself back into a rod again, as it is written: But Aaron’s rod swallowed up their rods (ibid., v. 12). If a man made bundles out of the rods that were cast to the ground to become serpents, there would have been more than ten bundles, yet Aaron’s rod swallowed them all and it became no larger than it was previously. When Pharaoh beheld that, he was amazed and exclaimed: “Surely if he should command the rod to swallow Pharaoh and his throne, it could swallow them.” That was the sign that He had given to Moses at the bush when He said: This which is in thy hand, cast it to the earth (ibid. 4:2). The word this alludes to Pharaoh, who is compared to a snake, as is said: The Lord with His sore and great and strong sword will punish leviathan the slant serpent (Isa. 27:1). When Moses withdrew from Pharaoh’s presence, the wicked one said: “If this son of Amram comes near me again, I will slay him, I will hang him, I will burn him.” That is why, when Moses returned, Pharaoh became like a rod. And Pharaoh’s heart was hardened, and he harkened not unto them, as the Lord had spoken (Exod. 7:13). With reference to the first five plagues, the words Pharaoh’s heart was hardened, etc., are written, but after the fifth plague occurred and he still would not permit them to leave, the Holy One, blessed be He, said: Henceforth, even if he desires to send them away, I will not allow it. Hence, with reference to the last five plagues it is written: But the Lord hardened Pharaoh’s heart (ibid. 10:20). Moses decreed what was to transpire, and the Holy One, blessed be He, executed it, as it is said:: Thou shalt also decree a thing, and it shall be established unto thee (Job 22:28).

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