Zechariah 7:4 Meaning

2When they had sent unto the house of God Sherezer and Regem-melech, and their men, to pray before the LORD,

3And to speak unto the priests which were in the house of the LORD of hosts, and to the prophets, saying, Should I weep in the fifth month, separating myself, as I have done these so many years?

4Then came the word of the LORD of hosts unto me, saying,

5Speak unto all the people of the land, and to the priests, saying, When ye fasted and mourned in the fifth and seventh month, even those seventy years, did ye at all fast unto me, even to me?

6And when ye did eat, and when ye did drink, did not ye eat for yourselves, and drink for yourselves?