Apocalypse Revealed #614
614. 14:2 And I heard a voice from heaven, like the voice of many waters. This symbolizes the Lord speaking through the new heaven with Divine truths.
A voice from heaven symbolizes an utterance or declaration coming from the Lord through heaven, for when a voice is heard from heaven, it comes from the Lord. Here it comes through the new heaven formed of Christians, meant by Mount Zion on which the Lamb was seen standing, and with him the one hundred and forty-four thousand (nos. 612[1-4], 613). Many waters symbolize Divine truths (no. 50).
The Lord is similarly depicted as speaking through heaven with Divine truths in the following places:
The Son of Man's voice was heard "as the sound of many waters" in Revelation 1:15. And the voice from the throne "as the sound of many waters" in Revelation 19:6. The voice of the God of Israel "like the sound of many waters" in Ezekiel 43:2.
The voice of Jehovah is over the waters..., Jehovah over many waters. (Psalms 29:3)
...the sound of (the cherubim's) wings, like the sound of many waters... (Ezekiel 1:24)
Cherubim symbolize the Word (no. 239), thus the Divine truth with which the Lord speaks.
Arcana Coelestia #3065
3065. 'Behold, I am standing beside a spring of water' means a state when within the Human conjunction takes place involving Divine truth. This is clear from the meaning of 'a spring' as truth, dealt with in 2702, here Divine truth since the subject is the Lord. The state itself in which the conjunction takes place is meant by 'standing beside the spring'; and the fact that it was effected within the Human is evident from the train of thought.