Midras Mazmur 68:6: Midrash Tanchuma, Midrash Tanchuma Buber, Esther Rabbah & Midrash Tehillim

Our sages stated in the name of R. Eleazar the son of Pedat: The Holy One, blessed be He, likens Himself to the humblest of men in seven places in the Torah. It is written: For the Lord your God, He is God of Gods, and the Lord of Lords, the great God, the mighty and the awful (Deut. 10:17), and this is followed by the verse: He doth execute justice for the fatherless and widow, and loveth the stranger (ibid., v. 18). It says likewise: For though the Lord be high, yet regardeth He the lowly (Ps. 138:6), and also: Thus saith the High and Lofty One that inhabiteth eternity and whose name is holy: I dwell in the high and holy places, with him also that is of a contrite and humble spirit, to revive the spirit of the humble (Isa. 57:15). Similarly, Scripture says: Thus saith the Lord: The heaven is My throne, and the earth is My footstool (ibid. 66:1), and that is followed by: And on this man will I look, even on him that is poor and of a contrite spirit and trembleth at My word (ibid., v. 2). Elsewhere it is written: The Lord is King forever and ever. The nations are perished out of His land (Ps. 10:16), and that is followed by the verse: Lord, Thou hast heard the desire of the humble (ibid., v. 17). Scripture says: Sing unto God, sing praises to His Name. Extol Him that rideth upon the skies, whose name is the Lord; and exult ye before Him (ibid. 68:5), and after that is written: A father of the fatherless, the judge of the widows (ibid., v. 6). Likewise the verse Who made heaven and earth, the sea and all that in them is, who keepeth truth forever, who executeth justice for the oppressed (Ps. 146:6–7) is followed by: He upholdeth the fatherless, and the widow; and the way of the wicked He maketh crooked (ibid., v. 9).

Where it is stated (in Deut. 10:17): FOR THE LORD YOUR GOD IS GOD OF GODS…. See how great is < his > might and how great is < his > praise! Then what is written next (in vs. 18)? HE SECURES JUSTICE FOR THE ORPHAN AND WIDOW.
It is also written (in Ps. 138:6): FOR THOUGH THE LORD IS HIGH, HE HAS REGARD FOR THE HUMBLE….
It is also written (in Is. 57:15): [FOR] THUS SAYS THE HIGH AND EXALTED ONE, WHO INHABITS ETERNITY, WHOSE NAME IS HOLY: I INHABIT THE HIGH AND HOLY PLACE, WITH ONE ALSO THAT IS OF A CONTRITE AND HUMBLE SPIRIT.
It is also written (in Is. 66:1): THUS SAYS THE LORD: THE HEAVENS ARE MY THRONE AND THE EARTH IS MY FOOTSTOOL…. Then there is written (in vs. 2): ALL THESE MY HAND HAS MADE … YET UNTO THIS PERSON WILL I LOOK: UNTO ONE WHO IS POOR AND OF A CONTRITE SPIRIT.
And the rest are in the Book of Psalms (10:16): THE LORD IS KING FOR EVER AND EVER. Then there is written after that (in vs. 17): THE LONGING OF THE MEEK YOU HAVE HEARD, O LORD….
It is also written (in Ps. 68:5 [4]): SING TO GOD, PRAISE HIS NAME, BUILD A WAY FOR THE ONE WHO RIDES IN THE DESERT. What is written after it (in vs. 6 [5])? A FATHER OF ORPHANS AND AN ADVOCATE OF WIDOWS.
It is also written (in Ps. 146:1): HALLELUJAH. PRAISE THE LORD, O MY SOUL! And there is written in the same psalm (at vs. 6): WHO MADE HEAVEN AND EARTH. Then there is written (in vs. 7): WHO SECURES JUSTICE FOR THE OPPRESSED….

It is written: “You have seen, for You behold mischief and spite; to requite is in Your hand: the helpless man commits himself to You; You are the helper of the orphans” (Psalms 10:14). The congregation of Israel said before The Holy One blessed be He: ‘Master of the Universe, You saw that Esau the wicked came, and is destined to destroy the Temple, exile Israel from its land, and shackle them in collars – “You behold…to requite is in Your hand” – yet you rested Your Divine Presence upon Isaac, who said to him [Esau]: “Behold, the fat of the earth shall be your dwelling, and from the dew of the heavens from above” (Genesis 27:39). “The helpless man commits himself to You” – the next day he [Esau/Rome] comes and takes orphans and widows and incarcerates them in prison, and says to them: Will He about whom it is written: “The father of orphans and the judge of widows” (Psalms 68:6), come and rescue you from me? Rather, You helped his [Esau’s] orphan. Two orphans who remained from him, that is Remus and Romulus, you allowed the wolf to nurse them, and ultimately, they arose and constructed two great towers in Rome.’
Another matter: “You have seen, for You behold mischief and spite…” the congregation of Israel said before The Holy One blessed be He: ‘Master of the Universe, You saw Nebuchadnezzar the wicked, who came and destroyed the Temple, and exiled Israel, and shackled them in collars. “To requite is in Your hand” – yet You rested Your Divine Presence on Jeremiah, who said to us: “All the nations will serve him [Nebuchadnezzar] and his son and his son's son...” (Jeremiah 27:7). “The helpless man commits himself to You” – the next day he comes and takes Ḥananya, Mishael, and Azarya and puts them in the fiery furnace, and says to them: “Who is the God who will save you from my hands?” (Daniel 3:15). Rather, it is not, “You are the helper of the orphans,” but one orphan girl remained from him [Nebuchadnezzar] and you made her an empress in a kingdom that was not hers, and who was that? Vashti.’