What is the significance of the fact that they removed their ornaments?
Ramban #1: Whereas before they had removed some of their ornaments due to their state of mourning, now they removed them all. 1
Ramban #2 (according to the Midrash Rabah) 2 : It implies that Yisrael now accepted death upon themselves - a great source of Teshuvah.
But they had already removed them in the previous Pasuk?