Midras Keluaran 7:13: Ein Yaakov (Glick Edition), Midrash Tanchuma, Shemot Rabbah & Sefer HaYashar (midrash)

And the seven prophetesses that prophecied to Israel, who were they? Sarah, Miriam, Deborah, Hannah, Abigail, Huldah and Esther. Sarah as it is written (Gen. 11, 29) The father of Milcah and the father of Yiscah. And R. Isaac said: "Yiscah refers to Sarah, but why was she called Yiscah? Because that signifies seeing, and she was a seer through the Holy Spirit and this is derived from the passage (Ib. 21, 12) Whatever Sarah tells you hearken to her voice. Miriam, as it is written (Ex. 15, 26) Then took Miriam the prophetess, the sister of Aaron. Was she then Aaron's and not Moses' sister." "This means," said R. Nachman, in the name of Rab, "that she had prophecied even when she had been only Aaron's sister [before Moses' birth] saying, 'In the future my mother will give birth to a child that will deliver the Israelites.' Finally, when Moses was born, the whole house was filled with light, and her father arose, and kissed her on her head, and saying to her, 'My daughter, thy prophecy is fulfilled.' Afterward, when he was cast into the river, her mother rose, saying to her, 'My daughter, what has become of thy prophecy?' And thus we understand the passage (Ib. 2, 4) And his sister placed herself afar off, to ascertain what would be done to him, to mean to know what would be the outcome of her prophecy." Deborah, as it is written (Jud. 4, 4) Now Deborah, a prophetess, the wife of Lapidoth. R. Isaac said: "This means that she prepared wicks for the lights in Mishkai. Hannah, as it is written (I Sam. 2, 1) And Hannah prayed and said, 'My heart is glad in the Lord, my horn is exalted through the Lord.' My horn is exalted, and not my flask. This refers to David and Solomon, who were anointed with oil taken from a horn, their dynasty endured; but Saul and Jehu, who were anointed with oil from a flask, their dynasties did not endure. (Ib. 2) There is none holy as the Lord; for there is none besides Thee; Neither is there any rock like our God." R. Juda b. Manassia said: "Do not read, Ein Biltecha [none besides Thee] but read Ein Lebalathecha [nothing could wear you out] . Come and see that the nature of the Holy One, praised be He! is not like the nature of frail man. The work of frail man exhausts its maker, but the Holy One, praised be He! is not so; He exhausts His work." Neither is there any rock like our God; Do not read Ein Tzur (rock), but read Ein Tzayer, (there is no sculptor like our God) for the custom of the world is to form a shape on the wall, but he can put into it neither breath, nor soul, nor entrails, nor bowels, but the Holy One, praised be He! He forms a shape within a shape (creates a body within a body) and puts into it breath, soul, entrails and bowels. Abigail, as it is written (I Sam. 25, 29-31) And the soul of my lord will be bound in the bond of life with the Lord thy God. When she departed she said to him. And when the Lord will do *** ood my Lord. She prophecied that he would be king. R. Nachman said: "This is the meaning of the current statement, 'A woman handles the shuttle while she talks,' or 'the duck bends its head down in walking, and its eyes look all around (it follows two pursuits at the same time.'" Huldah, as it is written (II Kings 22, 14) And Chilkiyaha the priest, and Achikam, and Achbor and Shaphan and Assahyah went unto Huldah the prophetess, the wife of Shallum the son of Tikvah. But how did Huldah prophecy in the place where Jeremiah lived? At the school of Rab it was explained that Huldah was a relative and therefore he was not particular about it. But why did King Joshiyah himself ignore Jeremiah and send a committee unto Huldah? R. Shila said: "Because women are compassionate." R. Jochanan said: "Because Jeremiah was not there, for he went to bring the ten tribes back [from the exile]." And whence do we infer that he did bring them back? It is written (Ex. 7, 13) For the seller shall not return to that which is sold. It is possible that the prophet should prophecy the suspension of the jubilee law when the law had already been abolished? We must therefore say that Jeremiah had caused the return [of the ten tribes] and Joshiyah b. Amon reigned over them. Whence do we infer this? It is written (II Kings 23, 17) What king of monument is that which I see? And the men of the city said to him, "It is the grave of the man of God, who came from Judah and proclaimed these things which thou hast done against the altar of Beth-El.' What had Joshiyah to do with the altar of Beth-El? From this we infer that Jeremiah returned [the ten tribes] from captivity when he began to practice the jubilee law and Joshiyah was king over them. And Esther, as it is written (Est. 5) Now it came to pass on the third day that Esther put on her royalty. It should be written, royal apparel. "Infer from this," said R. Elazar, in the name of R. Cahnina, "that she clothed herself in the Holy Spirit. Here it is written Vatilbash (she put on) and there (I Chr. 12, 18) A spirit, labsha (invested) Amassai. [Just as in the latter place the word Labsha is employed to signify the Holy Spirit, so here also Vatilbash signfies the Holy Spirit]." R. Nachman said: "Pride does not- fit women. Two women were proud, and they both had unlovely names; one was call Bee (Deborah) and the other was called Cat (Huldah). Of Deborah it is written (Jud. 4, 6) And she sent and called Barak but she did not go to him, and of Huldah it is written (II Kings 22, 15) Say unto the man that hath sent you to me; and she did not say, tell the king."

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).

“Pharaoh's heart was hardened, and he did not heed them, as the Lord had spoken. The Lord said to Moses: Pharaoh's heart is stubborn, he refuses to let the people go. Go to Pharaoh in the morning; behold, he goes out to the water; and you shall stand by the Nile bank to meet him; and the staff that was transformed into a serpent you shall take in your hand (Exodus 7:13–15).
“Pharaoh’s heart was hardened.… The Lord said to Moses: Pharaoh’s heart is stubborn [kaved]” – he is angry. Just as the liver [kaved] becomes angry,¹¹The liver was regarded as the seat of anger; see Berakhot 61b. so, too, this one’s heart became like a liver; he does not understand, he is a fool: “As anger rests in the bosom of fools” (Ecclesiastes 7:9). With what do you chastise the fool? With a staff, as it is stated: “A rod to the back of fools” (Proverbs 26:3). Moses, too, chastised Pharaoh with a staff, as it is stated: “and the staff that was transformed into a serpent [you shall take in your hand].”
Another interpretation: “Pharaoh’s heart is stubborn [kaved]” – the Holy One blessed be He said to him: Wicked one, with the expression with which you honored yourself,¹²Pharaoh honored himself by refusing to humble himself before God. The midrash here is interpreting the word kaved in the sense of kavod, honor. with the same expression I will be honored at your expense, as it is stated: “When I have gained honor [behikavedi] through Pharaoh” (Exodus 14:18).
“Go to Pharaoh in the morning; behold, he goes out to the water” – he would go out to the water only in the morning, because that wicked one would boast and assert that he was a deity and did not need to relieve himself; therefore, he would go out in the morning. Catch him in the morning when he needs to relieve himself. “And the staff that was transformed into a serpent you shall take in your hand” so that he will be afraid of it.