Musar sobre Isaías 33:7

The second watch also consists of four hours, but it is divided into two parts. During the two hours preceding midnight the ministering angels weep bitterly over the destruction of the Temple, reciting the Psalm (137), “By the rivers of Babylon, there we sat and we also wept (when we remembered Zion). How shall we sing the song of Hashem song on alien soil…” At that time the Holy One Blessed is He weeps with them and the angels that the Holy One Blessed is He commanded to accompany Israel into the Babylonian and Edomite exiles also weep, as stated in the verse, “For they have cried for their altar in the street — emissaries of peace weep bitterly” (Yeshayahu 33:7). This is the meaning of the verse, “By the rivers of Babylon, there we sat down and also wept as we remembered Tzion.” That is, we, Israel, also wept along with the angels who wept there over the destruction of the Temple and slaughter of the righteous.