520. And the third part of [the waters] became wormwood. That this signifies that all truth in the understanding and in doctrine became such, is evident from the signification of the third part, which denotes all, here all truth in the understanding, and in doctrine, because stated of rivers and fountains of waters, which signify the understanding of truth, and doctrine from the Word. That the third part signifies all, may be seen above (n. 506). And from the signification of wormwood, which denotes truth mingled with the falsity of evil, as explained in the article above. It is therefore evident, that the third part becoming wormwood, signifies that all truth in the understanding and in doctrine was intermingled with the falsity of evil. Truth is intermingled with the falsity of evil, when evils of the life, which are adulteries, whoredoms, murders, hatreds of various degrees, enmities, injustice for the sake of gain, artful and secret thefts and robberies, cunning, deceit, and other things of a similar nature, are confirmed by the sense of the letter of the Word; also when falsities of religion are thus confirmed by those who are in the love of self, and thence in the pride of [their] own intelligence. The reason why truths are then mingled with the falsities of evil, is, that all things of the Word are truths, but when they are applied and made use of to confirm evils of the life, and false principles of religion, then the truths of the Word are intermingled with the falsities of evil, and they are consequently no longer truths, but truths falsified, which in themselves are falsities. In order that the truths of the sense of the letter of the Word may continue to be truths, they must be applied to confirm goods of the life, and true principles of religion, but if they are drawn aside and diverted from this application as their end, they are no longer truths, because there is not any perception of truth in them. Perception of truth comes from good, but not from evil.