"For the Lord Himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first: Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord." 1 Thessalonians 4:16-17

One call but three aspects *
1. Shout : The authority of it - the believers' response
2. Voice : The dignity of it - the believers' regard
3. Trump : The clarity of it - the believers' readiness

One command with three perspectives
1. With a Shout : The gravity of it
2. Voice of the Archangel : The grandeur of it
3. Trump of God : The greatness of it

*The absence of the Greek definite article before "voice" and "trump" make them qualifiers instead of being distinct.