‘Then he cried in my ears with a loud voice, saying, “Cause those who have charge over the city to draw near, every man with his destroying weapon in his hand.” '
Ezekiel heard a loud voice, the voice of Yahweh, and it spoke to heavenly visitants. Perhaps it was seen as addressed to Michael, the archangel, heavenly prince over God's people (Daniel 12:1). Alternately it may be a direct command to the leader of the visitants. The command goes out that those appointed to have charge over the judgment of Jerusalem now draw near. The time has come. The command is ominous, ‘every man with his destroying weapon in his hand'. The loudness of the cry indicated the certainty of what was to follow. Nothing could prevent it. It contrasts with the loud voice which would have done the inhabitants of Jerusalem no good at this point in time (Ezekiel 8:18).
This is similar in idea to Daniel 10:5-21; Daniel 12:1 where angels were said to be in charge of various countries, with their activities affecting what happened there. The ones in mind here may have been watching angels over Jerusalem, or else they may have been angels appointed and given charge for the task in hand.
The voice speaks from within the temple where God has temporarily again taken over His throne in the sanctuary as the glory of God fills the temple for the last time (Ezekiel 9:3).