Zechariah 7:1-5

In the fourth year of [the reign of] King Darius [of Persia], the word of the LORD came to Zechariah on the fourth day of the ninth month, which is Chislev (Dec 7, 518 B.C.). Now the people of Bethel had sent Sharezer and Regem-melech and their men to seek the favor of the LORD, speaking to the priests who belong to the house of the LORD of hosts and to the prophets, saying, “[Now that I am returned from exile] shall I weep in the fifth month [mourning the destruction of the temple], and fast as I have done these many years [in Babylon]?” Then the word of the LORD of hosts came to me (Zechariah), saying, “Speak to all the people of the land and to the priests, saying, ‘When you fasted and mourned in the fifth and seventh months these seventy years [that you were in exile], was it actually for Me that you fasted?