ייִדישער מחשבֿה אויף שמות 33:6

The Talmud (Shabbat 88) says that at the time Israel proclaimed "we shall do and we shall hear," six hundred thousand angels came and placed two crowns on the head of each Israelite, one for "we shall do" and one for "we shall hear." When the people sinned at the episode of the golden calf, one million two hundred thousand angels descended and removed these crowns from the heads of the people. Compare Exodus 33,6, "they were stripped of their jewelry from Mount Chorev." Rabbi Yochanan says "all of these crowns were acquired by Moses, since it says immediately afterwards "and Moses would take the tent." Rabbi Shimon said that in the future G-d will restore them to Israel, since we read in Isaiah 51,11, "the ones redeemed by the Lord will return and come to Zion wearing gladness and eternal joy on their heads."