Revelation 1:15 describes Christ's voice as rushing waters — the same imagery in 14:2, identifying the source as Christ himself.

In Revelation 5:8, the twenty-four elders hold harps in heavenly worship — the same harp imagery heard in this verse.

In Revelation 15:2, the conquerors stand by the sea of glass with harps of God — another heavenly scene with harps.

Revelation 19:6-7 echoes the roar of rushing waters, thunder, and harps — there it's the multitude singing 'Hallelujah', connecting to the sound in 14:2.

In Revelation 18:22, harpists fall silent in Babylon's judgment — contrasting the heavenly harp music heard here.

Ezekiel 43:2 describes God's voice as the sound of many waters — directly parallel to the heavenly voice John hears.

John 12:29 describes a voice from heaven that sounded like thunder, exactly matching the thunder-like voice in Revelation. Strong parallel.

In Psalm 93:4, the Lord's voice is mightier than many waters — the same imagery used for the heavenly voice in Revelation.

Exodus 19:16 depicts thunder and a loud trumpet at Sinai — a theophanic sound parallel to the heavenly voice with thunder in Revelation.