Midrash su Salmi 123:1

R. Jeremiah maintained that when they brought their earrings to him, Aaron raised his eyes heavenward and declared: Unto Thee I lift mine eyes, O thou that art enthroned in the heavens (Ps. 123:1). You who know all thoughts are aware that I do this unwillingly. He tossed their earrings into the fire, and the magicians approached and performed magical feats. Some say that Micah ground the bricks that Moses had saved into the mixture, and that he took the tablet which Moses had written upon when he raised Joseph’s coffin out of the Nile and cast them into the smelting furnace amidst the earrings. Then the calf came forth leaping. As it leaped about, the people began to cry out: This is thy god, O Israel. The guardian angels then began to proclaim: They forgot God, their savior, who had done great things in Egypt (Ps. 106:21).

(Devarim, Ibid.) "together, the tribes of Israel" — when they constitute one unit, and not when they are divided into many factions, as it is written (Amos 9:6) "Who builds His heights in the heavens and His bond on earth endures." — R. Shimon b. Yochai says: This is analogous to one's bringing two ships, connecting them with braces and bars, and building stately edifices upon them. So long as the ships are bound, the edifices endure; once the ships separate, the edifices no longer endure. So, with Israel: When they do the will of the L-rd, their heights are in the heavens and His bond on earth endures. Similarly, (Shemoth 15:20) "This is my G-d and I will extol Him ("ve'anvehu"): When I acknowledge Him, He is "beautiful" ("naveh, as in ve'anvehu"), and (even) when I do not acknowledge Him," He is "beautiful." Similarly, (Isaiah 43:12) "And you are My witnesses, says the L-rd, and I am G-d ("Kel")": When you are My witnesses, I am G-d, and if you are not My witnesses I am not G-d" (i.e., I do not manifest Myself as "Kel"). Similarly, (Psalms 23:1) "To You I have raised my eyes, Who dwells in Heaven." If not, I would not dwell in heaven. Here, too, "together, the tribes of Israel" — when they are one bond (agudah), and not when they are of many agudoth (factions). Thus, "together the tribes of Israel."