La Genèse 22:17 Midrash : Ein Yaakov (Glick Edition), Devarim Rabbah, Shemot Rabbah & Bamidbar Rabbah

כִּֽי־בָרֵ֣ךְ אֲבָרֶכְךָ֗ וְהַרְבָּ֨ה אַרְבֶּ֤ה אֶֽת־זַרְעֲךָ֙ כְּכוֹכְבֵ֣י הַשָּׁמַ֔יִם וְכַח֕וֹל אֲשֶׁ֖ר עַל־שְׂפַ֣ת הַיָּ֑ם וְיִרַ֣שׁ זַרְעֲךָ֔ אֵ֖ת שַׁ֥עַר אֹיְבָֽיו׃

je te comblerai de mes faveurs; je multiplierai ta race comme les étoiles du ciel et comme le sable du rivage de la mer et ta postérité conquerra les portes de ses ennemis.

Ein Yaakov (Glick Edition)

R. Juda the Nasi, taxed the Rabbis with the expense of the fortified wall of the city. Resh Lakish said to him: "The Rabhis did not need any guard, for it is written (Ps. 139, 18) Should I count them, they would be more numerous than the sand. Shall we assume that this refers to the righteous, since concerning all Israel it is written (Gen. 23, 17) As the sand ichich are upon the sea-shore. How can it be possible that the righteous should be more than the sands? We must therefore say that it refers to the deeds of the righteous which, if counted, would be more numerous than the sand. Now, if the little sands guard the sea, howmuch more should the acts of the upright, which are more than the sands, guard their performers?" Wiien Resh Lakish came before R. Jochanan, the latter said: "Why not say from the following (Songs 8, 10) I am a wall, and my breasts like the towers thereof; i.e., I am a wall, refers to the Torah. And my breast like the towers thereof, (Fol. 8) refers to the scholars." Resh Lakish, however, explains the last passage as Raba did, namely: "I am a wall, refers to the congregation of Israel; And my breasts like the towers thereof, refers to the house of prayer and the houses of learning." R. Huna b. R. Chisda taxed the Rabbis. R. Nachman b. Isaac said to him: "By this act you have transgressed the Pentateuch, the Prophets, and the Hagiographa. The Pentateuch (Deut. 33, 3) Yea, Thou also lovest the tribes; all their saints were in Thy hand: and they prostrate before Thy feet, received Thy words. Thus said Moses before the Holy One, praised be He: 'Sovereign of the Universe, even when Thou lovest the heathens, the saints of Israel shall be in Thy hand;' (i.e., they shall be guarded by Thee). The prophets (Hos. 8, 10) But even though they should be given among the nations, now will I gather them up; and they shall be humbled by reason of the burden of king and princes. And Raba said: 'This verse was written in the Aramaic language, [the expression vitnu (given) should be read yishnu (to study)]; i.e., if all the Israelites who are in exile should occupy themselves with the study of the Torah, the gathering of them would be at hand soon; but if only a few of them study, then they should be exempt merely from the burdens imposed by kings or princes.' And the Hagiographa (Ezra 7, 24) No one shall be empowered to impose any tax, tribute, or toil, etc. And R. Juda said: 'This refers to all kinds of taxes.' "

Devarim Rabbah

Another matter, “the Lord your God has multiplied you” – this is what the verse said: “I will bow to Your holy Sanctuary in reverence to You” (Psalms 5:8). Rabbi Ilai ben Rabbi Yosei ben Zimra said: The Holy One blessed be He said to Abraham that he would redeem his children with two letters. From where is this derived? As it is written: “And also that nation that they will serve, I will judge” (Genesis 15:14).23The word judge [dan] is written with two letters – dalet nun. But when He came to redeem them, He redeemed them with seventy-two letters. Rabbi Yudan said: From [the words]: “To come and take for Himself a nation” (Deuteronomy 4:34) until the end of the verse there are seventy-two letters.24In Hebrew, this segment of the verse (from “to come and take for Himself a nation from the midst of a nation” until “with great awesome deeds”) totals seventy-two letters (see Bereshit Rabba 44:19). Several commentaries write that the text of the midrash here should be emended to match the version there, as this is not in fact the end of the verse (see Matnot Kehuna; Rashash). Rabbi Avin said: He redeemed them with His name and His name has seventy-two letters.25“God’s name of seventy-two letters actually consists of seventy-two group of letters, each group being three letters. The letters dalet nun appear in the fiftieth group. Israel would be redeemed through an incomplete name of God if they would not repent, but through repentance they would experience redemption through the full name of seventy-two.”
Another matter, Rabbi Ilai said in the name of Rabbi Yosei ben Zimra: Why did the Holy One blessed be He not reveal to Abraham our patriarch that He would provide his descendants with manna? Rabbi Abba bar Kahana said: So is the way of the righteous; they say little and do a lot. Another matter, why did He not reveal it to them? It is because had he revealed it to them, Israel would have said: ‘We have already eaten it at Pharaoh’s table.’26Had the Israelites known what the manna was, by tradition from their forefathers, they would not have been awestruck when it fell, and the wicked among them would have falsely claimed to have eaten it before. Know that they [the Egyptians] would not provide them with straw, but Israel would say: “We remember the fish [that we used to eat in Egypt…]” (Numbers 11:5); that is why He did not reveal it to them.
Another matter, Rabbi Ilai said in the name of Rabbi Yosei ben Zimra: The Holy One blessed be He said to Abraham that He would increase his children like the stars. From where is this derived? As it is stated: “[He took him outside, and said: Look now toward the heavens, and count the stars, if you can count them, and He said to him:] So your offspring will be” (Genesis 15:5). But when He came to bless them, He blessed them more than He had said to them. “What is “in abundance”? “And multiply [harba arbe] [your descendants as the stars of the heavens, and as the sand that is upon the seashore” (Genesis 22:17).27The double verb is expounded to mean that He will multiply them as both the stars of the heavens and as the sand upon the shore.
What is [the meaning of the verse] that states: “Deliver me from the strife of the people; place me [at the head of nations]”? (Psalms 18:44). David said: “Deliver me from the strife of my people” (II Samuel 22:44) – that I will not have to be judged by them; “Deliver me from the strife of the people” – that they will not have to be judged by me. The Holy One blessed be He said to him: ‘David, why are you sitting with them? By your life, I have already appointed you king over them.’ He said to Him: ‘Since You appointed me over Your children, put into their hearts that they shall heed me,’ as so it is written: “As soon as they hear, they heed me” (Psalms 18:45). Moreover, David said: “Place me at the head of nations”28He pleaded to be the judge of other nations, not of Israel. –Rabbi Berekhya said: If you judge this nation [Israel], it will come and deliver you to God. Who is that? It is the God of gods, who sees but is not seen.29David did not want to judge Israel, because in the event of an error, they would present their complaints to God and David could be punished (Etz Yosef). Moses said to Israel: ‘As you live, I am capable of bearing ten like you and one hundred like you. Why, then, am I not capable of bearing you on my own? It is because the Lord your God has multiplied you beyond the capability of your judges.’

Shemot Rabbah

Pharaoh issued four decrees against them. Initially, he decreed and commanded the taskmasters to pressure them so that they would produce their quota and they would not sleep at home. He thought to diminish their procreation. He said: If they do not sleep at home they will not have children. The taskmasters said to them: ‘If you go to sleep in your homes, by the time we send to gather you in the morning, an hour or two of the day will have passed, and you will not meet your quota,’ as it is stated: “The taskmasters pressured them saying, [fulfill your work, your daily task]” (Exodus 5:13).
They would sleep on the ground. God said to them [the Egyptians]: ‘I said to their forefather Abraham that I will multiply his descendants like the stars, as it is stated: “For I will bless you, and I will multiply, etc.” (Genesis 22:17), and you are outsmarting them so they will not multiply? We will see whose matter prevails, Mine or yours.’ Immediately, “but the more they would afflict them, the more they would increase…” (Exodus 1:12).
Rabbi Akiva expounded: On account of the righteous women who were in that generation, Israel was redeemed from Egypt. What did they do? When they would go to draw water, the Holy One blessed be He would arrange for them small fish in their jugs, and they would draw half water and half fish. They would take it to their husbands and would place two pots on the fire [veshoftot], one with hot water and one with fish. They would feed them, bathe them, anoint them with oil, and give them to drink, and they would consort with them between the pots [shefatayim], as it is stated: “Now you may lie within the sheepfolds [shefatayim], wings of the dove covered with silver” (Psalms 68:14). In reward for having lain between the pots, Israel merited the loot of Egypt, as it is stated: “wings of the dove covered with silver.”
When they would conceive, they would come to their homes. When the time of their birth arrived, they would go and give birth in the fields, under apple trees, as it is stated: “Under the apple tree I roused you [there your mother was in childbirth]” (Song of Songs 8:5). The Holy One blessed be He would send an angel from the heavens above who would clean them and tend to them like the beast that tends to its young, as it is stated: “As for your birth, on the day you were born [your umbilical cord was not cut, and you were not washed in water for cleansing…and you were not swaddled]” (Ezekiel 16:4).27In this chapter, addressing the exile in Egypt, there was no midwife to perform these tasks; rather, God saw to them, as it is written: “I bathed you in water, rinsed your blood from upon you, and anointed you with oil. I dressed you in embroidered garments…I wrapped you, etc. (Ezekiel 16:9–10). They would take two round vessels of earth, one containing oil and one containing honey, as it is stated: “He suckled them honey from a boulder [and oil from a flinty rock]” (Deuteronomy 32:13).
Once the Egyptians became aware of them [the babies], they sought to kill them. A miracle was performed for them and they were enveloped in the ground. They [the Egyptians] brought oxen and they plowed [the land] above them, as it is stated: “Upon my back plowers plowed” (Psalms 129:3). After [the Egyptians] would leave, they would sprout and emerge like the grass of the field, as it is stated: “I caused you to increase like the growth of the field” (Ezekiel 16:7). Once they grew, they would come in herds [adarim] to their homes, as it is stated: “You came to have great beauty [ba’adi adayim]” (ibid.) – do not read it ba’adi adayim but rather be’edrei adarim. When the Holy One blessed be He revealed Himself on the sea, they recognized Him first, as it is stated: “This is my God and I will glorify Him” (Exodus 15:2). 28This is because they remembered Him from the miracles He performed for them in Egypt.