Voices, lightnings, and thunders
In Revelation 14:2, 'the voice of great thunder' signifies the Lord speaking through the New Heaven from Divine Love; it also signifies a glorification of the Lord from His celestial kingdom. (Apocalypse Revealed 615, Apocalypse Explained 855)
'Voices,' 'lightnings,' and 'thunders,' as in Revelation 16:18, signify rationalizations, falsifications of truth, and arguments grounded in falsities that stem from evil in the church among people who believe in salvation by faith alone. (Apocalypse Explained 821[4], 1014)
(References: Apocalypse Revealed 710)
Revelation 16:18
18
There were lightnings, sounds, and thunders; and there was a great earthquake, such as was not since there were men on the earth, so great an earthquake, so mighty.