La Genèse 9:13 Midrash : Midrash Tanchuma, Midrash Tanchuma Buber, Shemot Rabbah & Bereshit Rabbah

אֶת־קַשְׁתִּ֕י נָתַ֖תִּי בֶּֽעָנָ֑ן וְהָֽיְתָה֙ לְא֣וֹת בְּרִ֔ית בֵּינִ֖י וּבֵ֥ין הָאָֽרֶץ׃

J’ai placé mon arc dans la nue et il deviendra un signe d’alliance entre moi et la terre.

Midrash Tanchuma

And God remembered Noah (Gen. 8:1). May it please our master to teach us the benediction recited upon witnessing a rainbow. Thus did our masters teach us: Upon seeing a rainbow, one should recite the benediction: Blessed art Thou, O Lord our God, King of the universe, who doth remember His covenant, is faithful in His covenant, and fulfills His word. This blessing is found in the Mishnah.12Actually it is found in Berakhot 59b and not in the Mishnah. How do we know that it is also derived from the Torah? Because it is written: I have set My bow in the cloud, and it shall be as a sign of a covenant (Gen. 9:13).

Midrash Tanchuma Buber

(Gen. 8:1:) THEN GOD REMEMBERED NOAH. [Let our master instruct us: In the case of one who sees the bow in the clouds, what blessing must he say?25Tanh., Gen. 2:6. Thus] have our masters taught: One who sees a bow in the clouds must say a blessing. What blessing does he say? Blessed be the one who remembers the covenant, is trustworthy in his covenant, and has stood by his word. This is from the Mishnah,26Actually the blessing is found, not in the Mishnah, but in the gemara, Ber. 59a. but where is it shown from the Torah? The text reads (in Gen. 9:13): I HAVE SET MY BOW IN THE CLOUD, AND IT SHALL BE A SIGN OF A COVENANT < BETWEEN ME AND THE EARTH >. The conduct of the Holy One is not like the conduct of flesh and blood. In what respect? With flesh and blood, as long as one's close friend is alive, love has its place; and if one dies, love ceases. The Holy One, however, is not like that. When Abraham died, his (the Holy One's) love was preserved for his son Isaac, as stated (in Gen. 25:11): AND IT CAME TO PASS AFTER THE DEATH OF ABRAHAM THAT GOD BLESSED HIS SON ISAAC.

Shemot Rabbah

“When Pharaoh will speak to you, saying: Provide a wonder for you; then you shall say to Aaron: Take your staff, and cast it before Pharaoh, it will become a serpent” (Exodus 7:9).
“When Pharaoh will speak to you” – Rabbi Pinḥas HaKohen bar Ḥama began: “Declaring the end from the beginning, and from ancient times matters that have not been done; saying: My counsel will stand, and all My desire I will do” (Isaiah 46:10) – the Holy One blessed be He declares at the beginning what will be at the end, as He says to Moses: “This people will rise, and go astray after the foreign gods of the land” (Deuteronomy 31:16), which they were destined to do after the death of Joshua: “And they will forsake Me, and breach My covenant” (Deuteronomy 31:16); “they forsook the Lord and did not worship Him” (Judges 10:6). That is “declaring the end from the beginning.”
Rabbi Pinḥas HaKohen bar Ḥama said: Anyone who reads this verse thinks that perhaps there is a dispute on High, as He says: “My counsel will stand [and all My desire I will do].” What is “and all My desire I will do”? It is that He desires to vindicate His creations, as it is stated: “The Lord desires for the sake of His righteousness, to make the Torah great and glorious” (Isaiah 42:21), and does not seek to condemn any creature, as it is stated: “I have no desire in the death of the wicked, but that the wicked repent from his way and live” (Ezekiel 33:11). Therefore, it is stated: “And all My desire I will do.” Likewise you find that the Holy One blessed be He told Moses the end from the beginning; it is not written: If Pharaoh will speak to you, but rather, “when [Pharaoh] will speak”; he is destined to say this to you.
Rabbi Yehuda ben Rabbi Shalom said: He is speaking appropriately: “Provide a wonder for you.” Likewise, you find with Noah, after all the miracles that the Holy One blessed be He performed for him in the ark, and He took him out of it, He said to him: “And the waters shall no more become a flood to destroy all flesh” (Genesis 9:15). [Noah] began asking for a sign,1That there would never again be a flood. until the Holy One blessed be He said to him: “I have set My rainbow in the cloud” (Genesis 9:13); if the righteous Noah asked for a sign, all the more so, the wicked Pharaoh [would].
Likewise, you find with Hezekiah, when Isaiah came and said to him: “So says the Lord…I will heal you; on the third day you will go up to the house of the Lord” (II Kings 20:5), he began asking for a sign, as it is stated: “Hezekiah said…what is the sign that the Lord will heal me, and that I will go up to the house of the Lord on the third day?” (II Kings 20:8). If the righteous Hezekiah asked for a sign, all the more so, the wicked Pharaoh [would].
Ḥananya, Mishael, and Azarya, when they descended into the fiery furnace, they descended only with a sign. How so? “Not to us, Lord, not to us” (Psalms 115:1), said Ḥananya. “To Your name give glory” (Psalms 115:1), said Mishael. “For Your kindness and for Your truth” (Psalms 115:1), said Azarya. Gabriel was answering after them: “Why should the nations say: Where [now is their God?]” (Psalms 115:2). Once this became fluent in their mouths all night, they took that as a sign and descended.2They took as a sign the fact that their prayer was fluent in their mouths. See Berakhot 34b.
If you cannot learn it from here, learn it from another source, as it is written: “Hear now, Yehoshua the High Priest, you and your counterparts who sit before you; as they are men of a sign” (Zechariah 3:8). Who were they? Rabbi Yehuda ben Rabbi Shalom said: They were Ḥananya, Mishael, and Azarya, for whom this sign was performed.3The reference is to the sign that they received before descending into the furnace. If the righteous seek a sign, all the more so, the wicked [Pharaoh would].