'Waters' particularly signify the spiritual parts of a person, or the intellectual aspects of faith, and also their opposites.

'The waters above the firmament,' as in Genesis 1:7, signify the knowledges in the internal self, and 'the waters beneath the firmament' signify the knowledges of the external self.

'Waters,' as in Ezekiel 47:9, refer to the New Jerusalem, and they signify spiritual things from a celestial origin.

'Many waters,' as in Revelation 17:1, signify truths of the Word adulterated. 'Waters' or 'rivers' signify spiritual, rational, or scientific things pertaining to truth.

'Waters … that go softly,' as in Isaiah 8:6-7, signify spiritual things, and 'waters … strong and many,' signify falsities.

'Waters,' as in Psalms 104:3, signify divine truths.

'Waters' signify truths in the natural self, and in the opposite sense, falsities.

'The waters were dried up from off the earth,' as in Genesis 8:7, signifies the apparent dissipation of falsities.

(References: Apocalypse Explained 17; Apocalypse Revealed 50; Genesis 8)

17. These approximate or general explanations of the preceding words, not being presented in a continuous series, will appear disconnected; and this must be the case when each word or phrase is expounded separately, and the internal sense is immediately joined to the literal sense, which is diverse from it, and each is viewed by itself. But nevertheless, with angels, who are in the internal sense, this is not so. They do not see the sense of the letter, nor do they know anything about it; they see only the internal sense; and because they see this in the light of heaven, they see it in such a series and connection, and also in such abundance and thence in such wisdom, as cannot be expressed and described in human words. The ideas of angels, which are spiritual, also conjoin all things in a wonderful manner, and comprehend more than man can include or express in his ideas, which are natural, even as to a thousandth part thereof.