Midrash su Salmi 75:4

“Return, return, O Shulamite; return, return, and we will gaze upon you. Why will you gaze at the Shulamite like at a dance of two companies?” (Song of Songs 7:1)
“Return, return, O Shulamite,” Rabbi Shmuel bar Ḥiyya bar Yudan [said] in the name of Rabbi Ḥanina: Four times “return,” is written here, corresponding to the four kingdoms that rule over Israel. Israel comes under their control unscathed and emerges unscathed. “The Shulamite,” a nation in whose midst the eternal One who lives in peace [shalom] moves about; that is what is written: “I have moved about in a tent and a Tabernacle” (II Samuel 7:6).¹God rested His presence in the Tabernacle in the midst of Israel. The Tabernacle resided in four places in the Land of Israel: Gilgal, Shilo, Nov, and Givon, corresponding to the four times “return” is written here, as though the word Shulamite is written with each one (Maharzu, Bereshit Rabba 66:2).
Another matter, “the Shulamite,” a nation to whom [a blessing] concluding with peace is [recited] each day, just as it says: “And grant you peace [shalom]” (Numbers 6:26). Alternatively, “the Shulamite,” the nation that I am destined to settle in an abode of peace; that is what is written: “My people will live in a peaceful abode…” (Isaiah 32:18). Another matter, “the Shulamite,” the nation to whom I extend peace; that is what is written: “Behold, I will extend peace toward it” (Isaiah 66:12).
Rabbi Elazar bar Rabbi Maron said: A nation that completes [mashlemet] the stability of the world, both in this world and in the World to Come. Rabbi Yehoshua of Sikhnin said in the name of Rabbi Levi: A nation that all the good of the word comes only due to its merit. That is what is written: “God will give you from the dew of the heavens, and from the fat of the earth” (Genesis 27:28); “you,” the matter is dependent upon you and your merit, as it is written: “The Lord will open for you His good storehouse” (Deuteronomy 28:12), the matter is dependent upon you and your merit.
Rabbi Shmuel bar Tanḥum and Rabbi Ḥanan, the son of Rabbi Berekhya from Botzra, [said] in the name of Rabbi Yirmeya: The nation that made peace between Me and My world, as had they not accepted My Torah, I would have returned My world to emptiness and disorder, as Huna said in the name of Rabbi Aḥa: It is written: “The earth and all its inhabitants melt away” (Psalms 75:4). Had Israel not stood before Mount Sinai and said: “Everything that the Lord has said, we will perform and we will heed” (Exodus 24:7), the world would have begun to disintegrate. Who buttressed the world? It is I [anokhi], as it is stated: “I [anokhi] set its pillars firm, Selah” (Psalms 75:4); by the merit of: “I [anokhi] am the Lord your God” (Exodus 20:2), I set its pillars firm.²God caused the pillars of the world to be firm in the merit of the people of Israel accepting the Ten Commandments, the first of which was “I am the Lord your God” (Etz Yosef).

It has been taught on the authority of R. Simeon the son of Lakish: Why does Scripture say of the creation process (simply) first day, second day, third day, fourth day, fifth day, the sixth day, adding the definite article (heh)⁵The numerical value of heh is five. only in this instance, so that it reads the sixth day? This is to teach us, the rabbi explained, that God made an agreement with the works of creation in which he declared: If Israel accepts the Torah, in which there are five books, well and good, but if not I will return you to a state unformed and void (Gen. 1:2). Hence the sons of Korah exclaimed: When the earth and the inhabitants thereof trembled, I Myself established the pillars of it (Ps. 75:4). The word pillars in this verse refers to the Torah, which the Holy One, blessed be He, revealed at Sinai.

“It was during the days when the judges judged, there was a famine in the land. A man from Bethlehem of Judah went to reside in the field of Moav, he, his wife, and his two sons” (Ruth 1:1).
“It was during the days when the judges judged” – Rabbi Yoḥanan began and said: “Hear My people and I will speak; [Israel, and I will forewarn you]” (Psalms 50:7). Rabbi Yoḥanan said: One forewarns only one who can hear it. Rabbi Yudan ben Rabbi Simon said: In the past they were called Israel like all other nations: “Savta, Rama, and Savtekha” (Genesis 10:7);¹These are the names of nations listed in Genesis, chap. 10. from here forward, they are called only My people. “Hear My people and I will speak” – from where did you merit to be called My people? From “and I will speak” – from what you spoke before Me at Sinai and said: “Everything that the Lord has spoken we will do and we will heed” (Exodus 24:7). Rabbi Yoḥanan said: “Hear My people” – [what I have said] in the past; “and I will speak” – in the future. “Hear My people” – in this world; “and I will speak” – in the World to Come. So I will have a response to the angels of the nations of the world who are destined to accuse them before Me and say: ‘Master of the universe, these worship idols and those worship idols, these engaged in forbidden sexual relations and those engaged in forbidden sexual relations, these spilled blood and those spilled blood, and these are going down to the Garden of Eden and those are going down to Gehenna?’
At that time, the advocate of Israel is silenced. That is what you say: “At that time Mikhael will stand” (Daniel 12:1). Is there sitting on high? Did Rabbi Ḥanina not say: There is no sitting on high, as it is written: “I approached one of those standing [kamaya]” (Daniel 7:16). What is this language kamaya? Standing [kayama], as it is written: “Seraphim stood above Him” (Isaiah 6:2), and it is written: “The entire host of heaven standing in His presence on His right hand and on His left” (see I Kings 22:19). And you say “will stand”?²Since angels always stand, what does it mean that the angel Mikhael will stand at that moment? [Rather,] what is “will stand”? It is stand silent, as you say: “Shall I wait, because they do not speak, amdu] and do not answer>?” (Job 32:16).
The Holy One blessed be He says to him: ‘Do you stand silent and not advocate on behalf of My children? By your life, I will speak in support of their righteousness and rescue My children.’ What righteousness? Rabbi Elazar and Rabbi Yoḥanan, one says: Due to the righteousness that you established My world because you accepted My Torah, as had you not accepted My Torah, I would have restored it [the world] to emptiness and disorder, as Rabbi Huna said in the name of Rabbi Aḥa: “Earth and all its inhabitants dissolve, [I set its pillars, selah]” (Psalms 75:4). The world would have already dissolved, had Israel not stood before Mount Sinai…³Referring to a midrash that appears in Shir HaShirim Rabba 1:9: “If Israel had not stood on Mount Sinai and said: ‘Everything that the Lord has spoken we will do and we will heed’ (Exodus 24:7), the world would have dissolved and returned to emptiness and disorder.” The midrash there then continues as it does here. And who established the world? “I [anokhi] set its pillars” (Psalms 75:4). Due to the merit of anokhi, “I set its pillars, selah.”⁴Anokhi is the first word of the Ten Commandments. In other words, due to the merit of Israel’s future acceptance of the Ten Commandments and the entire Torah, God established the foundations of the world. One said: Due to the righteousness you did for yourselves in accepting My Torah, as had you not done so, I would have eliminated you from among the nations.
“God; I am your God” (Psalms 50:7) – Rabbi Yoḥanan said: It is sufficient for you that I am your patron. Reish Lakish said: Although I am your patron, how does My patronage help at trial?⁵The midrash is responding to the repetition in the verse: “God; I am your God.” God [Elohim] represents the attribute of justice, and the verse thus presents a tension between God being strictly just and God being particularly Israel’s God, i.e., their patron.
Rabbi Shimon bar Yoḥai taught: I am the God for all humankind, but I have designated My name only upon My people Israel. I am not called the God of all the nations, but rather, the God of Israel. “God [Elohim]; I am your God” – Rabbi Yudan interpreted the verse in reference to Moses: The Holy One blessed be He said to Moses: ‘Even though I called you “god to Pharaoh” (Exodus 7:1), “I am your God” – I am above you.’ Rabbi Abba bar Yudan interpreted the verse in reference to Israel: Although I called you god, as it is stated: “I said you are godlike [elohim]” (Psalms 82:6), “I am your God” – know that I am above you. The Rabbis interpreted the verse in reference to judges: Even though I called you elohim, as it is stated: “Do not curse elohim” (Exodus 22:27), know that I am above you. Then He said to Israel: ‘I accorded honor to the judges and called them elohim, and they demean them. Woe unto a generation that judges their judges.’

Another matter, “I have likened you [dimitikh], my love,” the Rabbis say: Because Israel appeared like mares, and [the horses of] the wicked Egyptians were aroused stallions, and they were pursuing them until they sank in the sea. Rabbi Simon said: Heaven forbid, Israel did not appear like mares, but rather the waves of the sea appeared like mares and [the horses of] the wicked Egyptians were aroused stallions, and they pursued them until they sank them in the sea. The Egyptian would say to his horse: ‘Yesterday, I would drag you to the Nile and you would not follow me, and now, you are sinking me in the sea?’ The horse would say to its rider: “He cast into the sea [rama bayam]” (Exodus 15:1); see what is in the sea [re’eh ma bayam]. A trap is prepared for you in the sea. Rabbi Yishmael taught: “The Lord overthrew Egypt in the midst of the sea” (Exodus 14:27); it teaches that the horse would cast its rider upward and he would descend downward with the horse above him. Rabbi Levi said: Like one who stirs a pot; what is below rises to the top and what is above descends below.
“My love [rayati]”—what is rayati? Rabbi Yonatan said: My benefactor; it is they who provide for Me two daily continual offerings. That is what is written: “The one lamb you shall offer in the morning” (Numbers 28:4), as Rabbi Yehuda bar Simon said: Israel would sacrifice two continual offerings each day, one in the morning and one in the afternoon. The one in the morning was sacrificed for transgressions that were performed at night, and the one in the afternoon was sacrificed for transgressions that were performed during the day. There was, then, no person in Jerusalem who would remain overnight with iniquity ascribed to him, as it is stated: “Righteousness would dwell there” (Isaiah 1:21).
Another matter, “I have likened you, my love [rayati]”—the shepherds [rayata] of My world, as you accepted the Torah. Had you not accepted it, I would have restored My world to emptiness and disorder, as Rabbi Ḥanina said in the name of Rabbi Aḥa: It is written: “The earth and all its inhabitants melt away; I set its pillars firm, Selah” (Psalms 75:4). Had Israel not stood at Mount Sinai and said: “Everything that the Lord has spoken we will perform and we will obey” (Exodus 24:7), the world would have melted away and returned to emptiness and disorder. Who firmly established the world? “I [anokhi] set its pillars firm, Selah.” Due to the merit of “I [anokhi] am the Lord your God” (Exodus 20:2),²⁵¹Due to the fact that Israel accepted the Torah, represented by the first of the Ten Commandments, “I am the Lord your God,” God set the the world on a firm foundation. “I set its pillars firm.”

(Exodus, Ibid.) "All the inhabitants of Canaan melted ('namogu')": When the inhabitants of Canaan heard that the Holy One Blessed be He had said to Moses (Devarim 20:16-17) "But from the cities of these people … you shall utterly destroy them," they said: These and those (Edom and Moav) feared only for their money and their property, but they are coming against us to destroy us and to inherit our land — whereupon "namogu", "namogu" signifying melting, as in (Ezekiel 21:12) "and every heart will melt", and (Psalms 75:4) "The earth and all its inhabitants will melt" ("namogim"), and (Ezekiel 21:12) "In order to melt ("lamug") the heart."