Like most numbers in the Bible, "six" can have various meanings depending on context, but has a couple that are primary. When used in relation to time -- six days, six hours, six years, etc. -- six generally represents a state of labor, struggle and conflict, especially the conflict involved with spiritual growth. The six days of creation, for instance, represent the stages we go through in our lives, working toward the peaceful seventh day, in which our evil desires are removed from us and we can rest. In most other references, six represents all desires for good and all the true ideas that come from those desires for good -- or in the contrary sense, all evil and all the resulting false thinking.

905. Behold a white cloud, signifies the Divine truth in ultimates, such as the Word is in the sense of the letter, within which is the spiritual sense. This is evident from the signification of a " cloud," as being the Divine truth in ultimates, and thus the Word in the sense of the letter (of which above, n. 36, 594); and this cloud appeared "white" because of the shining through it of the Divine truth in the heavens, such as the Word is in the spiritual sense, for all whiteness that appears in the heavens exists from the light of heaven, which in its essence is the Divine truth. This is why the angels, who are in the 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 on Heaven and Hell 126-140; and that white for this reason is predicated in the Word of truths, see above, n. 196).