"Behold, the name of the LORD cometh from far, burning with his anger, and the burden thereof is heavy: his lips are full of indignation, and his tongue as a devouring fire: And his breath, as an overflowing stream, shall reach to the midst of the neck, to sift the nations with the sieve of vanity: and there shall be a bridle in the jaws of the people, causing them to err." (Isaiah 30:27-28)
Isaiah's focus is now turned to the advent of God as He comes to punish the wickedness of men. The Lord's second coming and His intervention against Sennacherib are both in view as Isaiah beholds the overpowering nature of God's presence. As an expert, mighty man of war, the LORD of the armies moves against His enemies. His anger cannot be extinguished nor can it be resisted. This anger is completely righteous. It has been aggravated by man's rejection and abuse of God's people. The Lord's breath, lips and tongue symbolize His holy Word which does not go forth in vain. Concerning the Lord Christ, Isaiah has already declared, "...With the breath of his lips shall he slay the wicked (11:4)." This same truth is presented once again in Revelation 19:21 where the wicked are destroyed by the Word of God at Jesus' return.
The word for stream means torrent-valley or wadi. As the flash-floods of the middle eastern wadis come without warning and overpower all in their path, even so will God's salvation fight against the enemies of righteousness. In the valleys surrounding Jerusalem, Sennacherib's motives and actions were sifted and weighed by God. The Assyrian king was found wanting, and this event pictured the helpless condition of the rebellious nations which will be judged by the holiness of Christ in the last day.
When the Son of man shall come in his glory, and all the holy angels with him, then shall he sit upon the throne of his glory: And before him shall be gathered all nations: and he shall separate them one from another, as a shepherd divideth his sheep from the goats: And he shall set the sheep on his right hand, but the goats on the left (Matthew 25:31-33).