the Lord Makes the sound
“And He will send His angels with a great sound of a trumpet, and they will gather together His elect from the four winds, from one end of heaven to the other. Matthew 24:31
Revelation 8:2, 3 - “And I saw the seven angels who stand before God and to them were given seven trumpets. 3) Then another angel, having a golden censer, came and stood at the altar. He was given much incense, that he should offer it with the prayers of all the saints upon the golden altar which was before the throne.
9:1, 13-14 - Then the fifth angel sounded: And I saw a star fallen from heaven to the earth. To him was given the key to the bottomless pit.13) Then the sixth angel sounded: And I heard a voice from the four horns of the golden altar which is before God, 14) saying to the sixth angel who had the trumpet, “Release the four angels who are bound at the great river Euphrates.”