243. And white garments, that thou mayest be clothed, signifies genuine truths and intelligence therefrom. This is evident from the signification of "white garments," as being genuine truths, for garments signify truths (See above, n. 195), and "white" signifies what is genuine, and is predicated of truths (See above, n. 196); also from the signification of "to clothe," as being to acquire intelligence for oneself therefrom, for by means of genuine truths all intelligence is acquired; for the human understanding is formed to receive truths, therefore it becomes such as the truths are out of which it is formed. It is supposed that understanding is also the ability to reason from thought and to speak from falsities, and to confirm falsities by many arguments; but this is not understanding, it is only a faculty granted to man with the memory to which it is adjoined, and of which it is an activity. Yet by means of this faculty the understanding is born and formed, so far as man receives truths from affection; but genuine truths it is not possible for any man to receive from affection except only from the Lord, since they are from Him; consequently, to receive understanding, or to become intelligent, is not given to any man, except only from the Lord, but it is given to everyone who applies himself to receive (according to what was said above, n. 239. This, therefore, is signified by "I counsel thee to buy of Me white garments, that thou mayest be clothed."

3216. So that an even better knowledge may be had of the nature of representatives in the next life, that is to say, of the things that are seen in the world of spirits, let several examples also be given. When with angels a discussion is taking place about matters of doctrine regarding charity and faith, there is sometimes seen in that lower sphere where the corresponding community of spirits is situated the visible idea of a city or of cities with palaces in them. The architecture of these is so astounding that you would say architectural art itself existed there and was the inspiration of everything there. In addition the houses there are of varying appearance. And the marvel of it is that in every single palace or house not even the smallest point or tiniest visible detail exists that does not represent some aspect of the idea and discussion among the angels. From this it becomes clear how countless the details are which they contain, and also what was meant in the Word by the cities seen by prophets - what is meant by the Holy City or New Jerusalem, and also by the cities mentioned in the prophetical part of the Word, namely matters of doctrine regarding charity and faith, 402, 2449.