Ezekiel 24:2
Son of man, write thee the name of the day, even of this same day: the king of Babylon set himself against Jerusalem this same day. Son of man, write thee the name of the day, even of this same day: the king of Babylon set himself against Jerusalem this same day.
The command to write down the name of the day marks the exact, specific, memorable day on which the king of Babylon, Nebuchadnezzar, began his attack and laid siege against Jerusalem. That siege began in the tenth month, and its beginning is the reason for the fast of the tenth month, which shall become to the house of Judah joy and gladness. The dated record stands as a sign within the warnings given before the destruction of the city. It is the fulfillment of the warning that he would come against the city.
Ezekiel himself was a sign to Israel, and his privations and sufferings showed what was coming upon the people. The signs pointed to famine, captivity, the loss of Jerusalem, and the destruction of the temple, which was the pride and joy of their life. His wife died and he was forbidden to sigh, cry, or wail aloud, so that even his grief was part of the sign.