וַיַּ֣עַן מַלְאַךְ־יְהוָה֮ וַיֹּאמַר֒ יְהוָ֣ה צְבָא֔וֹת עַד־מָתַ֗י אַתָּה֙ לֹֽא־תְרַחֵ֣ם אֶת־יְרוּשָׁלִַ֔ם וְאֵ֖ת עָרֵ֣י יְהוּדָ֑ה אֲשֶׁ֣ר זָעַ֔מְתָּה זֶ֖ה שִׁבְעִ֥ים שָׁנָֽה׃
Then the angel of the LORD spoke and said: ‘O LORD of hosts, how long wilt Thou not have compassion on Jerusalem and on the cities of Judah, against which Thou hast had indignation these threescore and ten years?
Read halakhic rulings (Jewish law) on Zechariah 1:12: and classical halakhic sources.