In Exodus 9:23, 29, this signifies truths divine which enlighten and perfect people in heaven, but terrify people in hell. (Arcana Coelestia 7573)

In Psalm 29:3, this signifies the Word in its power. (Doctrine Regarding Sacred Scripture 18[4])

When the Lord speaks through the heaven, it descends into the lower spheres and is heard as thunder. As He speaks through the whole of heaven at once, the sound is called 'seven thunders' in Revelation 10. 'Seven' signifies all, everything, and wholeness. This is why 'thunder' signifies instruction and perception of truth, and in this instance, the revealing and manifestation of truth. A voice from heaven is heard as thunder when it comes from the Lord, which can be seen in John 12:28-30, Job 37:4-5, 2 Samuel 22:14, Revelation 14:2, and Psalms 81:8. 'Great thunder,' as in Revelation 14:2, signifies the divine good of divine love.

(Референци: Apocalypse Explained 10, 14 [2]; Apocalypse Revealed 472)

5075. 'After these words' means after the things prior to this. This is clear from the meaning of 'words' in the original language, in which the same expression also means things. This therefore is why 'after these words' here means after these things, and so after those that happened prior to this. The reason words ¹ in the original language also means things is that in the internal sense 'words' means the truths of doctrine, on account of which all Divine Truth in general is called the Word; and in the highest sense the Lord Himself, the source of all Divine Truth, is the Word, 1288. A further reason is that no thing which comes into being anywhere in the world has any existence, that is, any reality, unless it has been created by Divine Good acting through Divine Truth. It explains why in Hebrew the same expression is used for things as for words. The truth that no thing anywhere in the world has any existence, that is, any reality, unless it has been created by Divine Good acting through Divine Truth, that is, through the Word, is evident in John,

In the beginning was the Word, and the Word was with God, and the Word was God. All things were made through Him, and without Him nothing was made that was made. John 1:1, 3.

[2] The interior meanings that words possess have their origin for the most part in the interior man, which dwells with spirits and angels. For as to his spirit, that is, as to his true self which lives after the death of his body, everyone lives in communion with angels and spirits, though the external man is not conscious of this. Living in communion with them he is also among those who use a universal language and so use that which is the origin of verbal expressions. It is for this reason that words have many spiritual meanings attached to them which to outward appearance seem to be out of keeping with them; but inwardly they are in keeping, as with the meaning of 'words' here as things. The same is true of very many other expressions, as when for instance a person's understanding is called his inner sight and is said to possess light, or as when his apprehension of and obedience to something is called hearing and listening, or as when his detection of something is called smelling, and so on.