905. Behold a white cloud. That this signifies Divine truth in ultimates, such as the Word is in the sense of the letter, which contains the spiritual sense, is evident from the signification of a cloud, as denoting Divine truth in ultimates, and thence also the Word in the sense of the letter, concerning which see above (n. 36, 594). And this cloud appeared white from the translucence of Divine truth in the heavens, such as the Word is in the spiritual sense. For all whiteness appearing in the heavens exists from the light of heaven, which in its essence is Divine truth. This is why the angels, because they are in Divine truth, are clothed in white and shining garments.
That Divine truth proceeding from the Lord as a Sun is the light of heaven, may be seen in the work concerning Heaven and Hell (n. 126-140); and that hence white in the Word is stated of truths (see above, n. 196).