Midrasch zu Jirmejahu 31:3

And his sister stood from afar... - Why did Miriam stand from afar? Rabbi Amram said in the name of Rav: Because Miriam prophesied and said "In the future, Mother will give birth to a child that will be the savior of the Jewish people." When Moshe was born, the entire house was filled with light. [Miriam's] father arose and kissed her on the head. He [Amram] said to her [Miriam]: "My daughter, your prophecy has been fulfilled". That is what is said (Exodus 15:20) "And Miriam the Prophetess, the brother of Aharon, took the tambourine..." Was she only the brother of Aharon and not the brother of Moshe? Rather, she had stated that prophecy while she was the sister of Aharon and not (yet) the sister of Moshe. When they put him (Moshe) in the river, her mother arose and hit her on the head and said to her daughter: "My daughter, where is your prophecy!?" And this is why the verse says "And his sister stood by from afar", for she wanted to know what would be the results of her prophecy. And the Rabbis say the entire verse was said with the Divine Spirit. "And she stood" similar to (Samuel I 3:10) "And G-D came and stood". "His Sister" similar to (Proverbs 7:4) "Say to wisdom, she is your sister". "From afar" similar to (Jeremiah 31:2) "From afar G-D is seen to me". "To know what will happen to him" similar to (Samuel I 2:3) "For G-D is all knowing".

"And his sister stood back" - Why did Miriam stand back? Rabbi Amram said in the name of Rav: "Because Miriam had prophesied: 'In the future, my mother will give birth to a son who will save Israel'. When Moses was born, the whole house was filled with light; her father rose and kissed her on the head. He said to her: 'My daughter! Your prophecy has come to pass' - as it is written [Exodus 15:20]: 'And Miriam the prophetess, sister of Aaron, took up the timbrel.' [Why was she called] 'Sister of Aaron,' and not 'sister of Moses'?! Because when she issued her prophecy, she was [only] the sister of Aaron - Moses had not been born yet. When she cast him into the Nile, her mother rose and struck her on the head. She said: 'My daughter! What has become of your prophecy?!' This is why it is written 'his sister stood back etc.': in order to know would become of her prophecy. And our rabbis taught: This entire verse speaks [not of Miriam, but] of the Holy Spirit. 'And she stood...' refers to 'The LORD came and stood...' [I Samuel 3:10]; '[His] sister' refers to 'Say to Wisdom: "You are my sister"' [Proberbs 7:4]. 'Back' refers to 'The Lord appeared to me from far back' [Jeremiah 31:3]. 'In order to know what would happen to him' refers to 'For the LORD is a God of knowledge.' [I Samuel 2:3]".

... Teach us oh, teacher: once the Ninth of Av has ended, is everything permitted? R’ Chiyah the Great taught like this: once the Ninth of Av has ended, one is permitted to do anything. Why? Because it is like the case of a person whose dead is laid out before him, who is forbidden to eat meat or drink wine. Once the dead is buried, the mourner is permitted to do so. So to on the Ninth of Av one is a mourner – once the day has ended one is permitted to do anything. Even though we are permitted, we must always have a sigh in our hearts until the Holy One returns to her. The Holy One said to them: by your lives! I burnt her, as it says “From above He has hurled fire into my bones…” (Lamentations 1:13) I will build her, as it says “Yet again will I rebuild you, then you shall be built, O virgin of Israel…” (Jeremiah 31:3) Zion said to Him: Behold, I have been sitting thus for many years! I have counted the days from old and I have not been redeemed, therefore I have despaired. She said that my master has abandoned me. And from where do we learn that Zion said this? From that which is written regarding it “And Zion said, ‘The Lord has forsaken me, and the Lord has forgotten me.’” (Isaiah 49:14) ... Another explanation. “And Zion said, ‘The Lord has forsaken me…” (Isaiah 49:14) What is written before this? “Sing, O heavens, and rejoice, O earth, and mountains burst out in song, for the Lord has consoled His people, and He shall have mercy on His poor.” (Isaiah 49:13) Once Zion saw that the prophet recalled His people and His poor, but did not mention Zion or Jerusalem she said ‘the Lord has forsaken me, and the Lord has forgotten me.’ Immediately the Holy One replied and said to her: just as it is impossible for a woman to forget her sucking child, so to I am not able to forget you, “Shall a woman forget her sucking child, from having mercy on the child of her womb?” (Isaiah 49:15) She said to Him: Master of the world! How is that possible? There is no end to the evils I have done! I caused Your Holy Temple to be destroyed and I killed the prophets. R’ Berachia the Kohen said in the name of Rebbe: the Holy One said to her, I will forget your evil but I will not forget your good. “…These too shall forget, but I will not forget you.” (ibid.) I have forgotten “"These are your gods, O Israel…” (Exodus32:4) but “I am the Lord, your God…” (Exodus 20:2) I will not forget.

THE EGYPTIAN BONDAGE
RABBAN JOCHANAN, son of Ẓakkai, opened (his exposition with the text): "In that day the Lord made a covenant with Abram, saying, Unto thy seed will I give this land, from the river of Egypt unto the great river, the river Euphrates" (Gen. 15:18). Abram said before the Holy One, blessed be He, Sovereign of all the universe ! Thou hast not given me seed, yet dost Thou say, "Unto thy seed will I give || this land" (ibid.). He said: "Whereby shall I know that I shall inherit it?" (Gen. 15:8). The Holy One, blessed be He, said to him: Abram! The entire world stands by My word, and thou dost not believe in My word, but thou sayest, "Whereby shall I know that I shall inherit it?" (ibid.). By thy life! In two ways shalt thou surely know, as it is said, "And he said to Abram, Know of a surety that thy seed shall be a stranger in a land which is not theirs,… and they shall afflict them" (Gen. 15:18).