For the Lord himself will descend from heaven with a shout, with the voice of the archangel, and with God's trumpet. The dead in Christ will rise first,
A shout ... Jesus cried "with a loud voice" over the grave of Lazarus (John 11:43); and, in the light of the passage before us, there must be some significance in it.  The shout is here identified with the voice of the archangel and the sound of a trumpet; and evidently some fantastically penetrating sound will signal the onset of the Second Advent.  Such sounds attended the giving of the Law of Moses on Mt. Sinai; but it is idle to speculate as to the meaning of such things.  The Second Advent will also be with the clouds of heaven  (1 Thessalonians 4:17), the same having been mentioned at the time of the Ascension (Acts 1:9-11), with the metaphor being changed to "flaming fire" in  2 Thessalonians 1:7, and with the Saviour himself having stressed the same thing (Luke 21:27).