“But when the king heard thereof, he was wroth: and he sent forth his armies, and destroyed those murderers, and burned up their city.”
King James Version (KJV)
22:7 The king sending forth his troops - The Roman armies employed of God for that purpose. Destroyed those murderers - Primarily the Jews.
Mt 22:7 And when the king heard [of it], he was wroth. He who insults or assails a king's heralds assails the king's majesty. Destroyed those murderers, and burned up their city. Strikingly fulfilled in the fate of the Jews. The Roman armies were chosen to inflict the retribution upon the Jewish nation.