מַשָּׂ֖א גֵּ֣יא חִזָּי֑וֹן מַה־לָּ֣ךְ אֵפ֔וֹא כִּֽי־עָלִ֥ית כֻּלָּ֖ךְ לַגַּגּֽוֹת׃
די נבֿואה אױף דעם טאָל פֿון זעונג. װאָס איז דיר דעןװאָס דו ביסט אין גאַנצן אױף די דעכער אַרױף,
Rashi
the Valley of Vision This is Jerusalem, the valley concerning which most prophecies were prophesied.
Ibn Ezra
The valley of vision. Jerusalem, the centre of all prophecies.
Rashi
that all of you have gone up to the rooftops When an army comes upon them, they go up to their roofs to see the army and to fight. Our Rabbis, however, explained this concerning the priests who went up to the roof of the Temple with the keys of the forecourt in their hands, as is stated in the Tractate Taanith (29a). The Midrash Aggadah, however, states that they, (the people of Jerusalem,) were haughty. (This is found) in Lamentations Rabbah (Int. 24).