Revelation 14:2
And I heard a sound from heaven like the roar of much rushing water, and like the sound of loud thunder. And the sound I heard was like people playing their harps.
Revelation 1:15
And His feet were like shiny brass, [glowing] as when it is being refined in a furnace, and His voice was like the sound of much rushing water.
Revelation 5:8
And when He had taken the book, the four living beings and the twenty-four elders fell down in front of the Lamb [i.e., to worship Him]. Each one of them held [in his hands] a harp and a golden bowl full of incense, which are the prayers of the saints [See Psa. 141:2; Rev. 8:3-4].
Revelation 11:15
Then the seventh angel sounded its trumpet, and there were loud voices in heaven saying, "The kingdom of the world has become the kingdom of our Lord [i.e., God] and of His Christ, and He will rule forever and ever."
Revelation 15:2
And I saw what seemed to be an ocean of glass, mixed with fire, and those who had been victorious over the beast, his statue and the number of his name. They were standing beside [or, "on"] the ocean of glass and held harps [given to them] by God.
Revelation 1:10
I was in [i.e., under the influence of] the Holy Spirit on the Lord's day [i.e., Sunday], when I heard behind me a loud voice, like a trumpet,
Revelation 6:1
And I watched while the Lamb broke open one of the seven seals. Then I heard one of the four living beings saying in a thunderous voice [to the one on the white horse ?], "Come [out]."
Revelation 8:7-1
[When] the first trumpet sounded [I saw] hail and fire, mingled with blood, being hurled down onto the earth. And one third of it was burned up, and one third of the trees were burned up and all the green grass was [also] burned up.
Revelation 10:3-4
and he called out in a loud voice, like a roaring lion. And when he shouted, the seven thunders responded to the voice [of the angel]. [Note: These "seven thunders" have not been previously mentioned].
Revelation 11:12
Then the two witnesses/prophets heard a loud voice from heaven saying to them, "Come up here." So, they went up to heaven in a cloud, and their enemies saw them.
Revelation 18:22
And the sound of harp-players and musicians and flute-players and trumpet-players will never be heard in you again. And no workers of any trade will be found in you again, and the sound of a [flour] mill [grinding] will never be heard in you again.
Revelation 19:1-7
After these things I heard what sounded like the loud voices of a huge crowd in heaven, shouting, "Hallelujah [which means, "Praise God"]! Salvation and splendor and power belong to our God.