John Gill Commentary Zechariah 1:5

"Your fathers, where are they? and the prophets, do they live for ever?" — Zechariah 1:5 (ASV)

Your fathers, where [are] they ?
&c.] They are not in the land of the living; they perished by the sword of the Chaldeans, or died in captivity: and the prophets, do they live for ever ?
meaning either the false prophets, as Hananiah and Shemaiah, (Jeremiah 28:17) (29:32) or the true prophеts of the Lord; and the words may be considered as a prevention of an objection the people might make, taken from their prophets dying in common with their fathers; and so the Targum paraphrases them, "and if you should say, the prophets, do they live for ever?" which is followed by Jarchi, and embraced by many interpreters: the answer is, it is true they died; but then their words live, and have had their full accomplishment.