Ezekiel 24:27

In that day shall thy mouth be opened - What is, When some one who shall have escaped from Jerusalem, having arrived among the captives, shall inform them of the destruction of the city, the temple, the royal family, and the people at large; till then he might suppress his tears and lamentations. And we find from Ezekiel 33:21, that one did actually escape from the city, and informed the prophet and his brethren in captivity that the city was smitten.

Thus he was not only a prophet to foretell such things, but he was also a sign or portent, shadowing them out by circumstances in his own person and family; and thus the prediction, agreeing so perfectly with the event, proved that the previous information was from the Lord.

Ezekiel had been employed four years in foretelling the calamities about to come to pass. He had been utterly disregarded by the inhabitants of Jerusalem, and received with apparent respect but with real incredulity by those in exile. Now until the city had been actually taken, the voice of prophecy should cease, so far as God's people were concerned. Hence the intervening series of predictions relating to neighboring and foreign nations Ezekiel 25-32. After which the prophet's voice was again heard addressing his countrymen in their exile. This accounts for the apparently parenthetical character of the next eight chapters.

24:27 No more dumb - From this prophecy for eighteen months during the siege, he does not prophesy of Israel, but of other nations.Thou shalt be a sign - Until the event shall convince the Jews, thou shalt by sign, signify to them, what is coming.