Reference for Zechariah 7:5

אֱמֹר֙ אֶל־כָּל־עַ֣ם הָאָ֔רֶץ וְאֶל־הַכֹּהֲנִ֖ים לֵאמֹ֑ר כִּֽי־צַמְתֶּ֨ם וְסָפ֜וֹד בַּחֲמִישִׁ֣י וּבַשְּׁבִיעִ֗י וְזֶה֙ שִׁבְעִ֣ים שָׁנָ֔ה הֲצ֥וֹם צַמְתֻּ֖נִי אָֽנִי׃

’Speak unto all the people of the land, and to the priests, saying: When ye fasted and mourned in the fifth and in the seventh month, even these seventy years, did ye at all fast unto Me, even to Me?