Hebrews 12:19
to the blast of a trumpet and the sound of words [from God] that the hearers begged not to have to listen to [anymore]. [See Ex. 20:19].
1 Corinthians 15:52
in a split second, as quickly as the twinkle of an eye, when the last trumpet blows. For the trumpet will blow and dead people [i.e., believers] will be raised up, never to decay again, and [the living] will be changed [i.e., physically and spiritually].
1 Thessalonians 4:16
For the Lord Himself [i.e., Jesus] will come down from heaven with a commanding shout [Note: This probably refers to Jesus' voice. See John 5:25, 28], [and] with the archangel's voice [i.e., Michael. See Jude 9] and with the sound of God's trumpet; [at this] the dead in [fellowship with] Christ will rise [from the dead] first.