Verse 2. And the whole power of the Internal shall be communicated to the External; and the External shall be prepared, by the acknowledgement of the Lord, and influx from Him through the heavens, for such worship; while the conjunction of truth with good shall be effected, and thus conjunction with the Lord.

'The voice as of many waters,' and 'a voice of great thunder,' as in Revelation 14:2, signifies the Lord speaking through the universal heaven from the divine truths of His divine wisdom, and from the divine good of His divine love.

(Odkazy: Apocalypse Explained 14 [2]; Apocalypse Revealed 615)