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And He will send out His angels with a loud trumpet call, and they will gather His elect from the four winds, from one end of the heavens to the other.

Again, if the trumpet sounds a muffled call, who will prepare for battle?

…in an instant, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed.

For the Lord Himself will descend from heaven with a loud command, with the voice of an archangel, and with the trumpet of God, and the dead in Christ will be the first to rise.

…to a trumpet blast or to a voice that made its hearers beg that no further word be spoken.

On the Lord’s day I was in the Spirit, and I heard behind me a loud voice like a trumpet,

After this I looked and saw a door standing open in heaven. And the voice I had previously heard speak to me like a trumpet was saying, “Come up here, and I will show you what must happen after these things.”

And I saw the seven angels who stand before God, and they were given seven trumpets.

And the seven angels with the seven trumpets prepared to sound them.

And as I observed, I heard an eagle flying overhead, calling in a loud voice, “Woe! Woe! Woe to those who dwell on the earth, because of the trumpet blasts about to be sounded by the remaining three angels!”

…saying to the sixth angel with the trumpet, “Release the four angels who are bound at the great river Euphrates.”