A church cannot serve two masters. It cannot peacefully coexist with truths and falsities. To want to live with both and to seek a compromise will cause the church to be laid to waste. The church will perish, and the goods and truths of the Word will be taken away from it.

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.

2449. That 'He overthrew those cities' means that all truths were separated from them so that they might possess falsities alone is clear from the meaning of 'cities' as matters of doctrine, and so as truths, for truths make up matters of doctrine, dealt with in 402, 2268, 2428. These are said to be 'overthrown' when falsities stand in place of truths, here when all truths have been separated from them, as well as all goods - goods too being dealt with in this verse, since the subject is the final state of those inside the Church who are governed by falsities and evils.

[2] This also is what their state comes to be, which, so that the nature of it may be known, must be described briefly. All who enter the next life are taken back to a life similar to that which they were leading during their lifetime., Then in the case of the good evils and falsities are separated so that the Lord may raise these people up by means of goods and truths into heaven; but in the case of the evil goods and truths are separated so that those evil ones may be carried away by means of evils and falsities into hell, see 2119, in exact accord with the Lord's words in Matthew,

To him who has, it will be given, so that he may have more abundantly; but from him who has not, even what he has will be taken away. Matthew 13:12.

And elsewhere in the gospel,

To everyone who has, it will be given, so that he may have in abundance; but from him who has not, it will be taken away. Matthew 25:29; Luke 8:18; 19:24-26; Mark 4:24-25.

The same is meant by the following words which appear in Matthew,

Let both grow together until the harvest; and at the time of harvest I will tell the reapers, Gather the weeds first and bind them in bundles to burn them, but gather the wheat into my barn. The harvest is the close of the age. Just as the weeds are gathered and burned with fire, so will it be at the close of the age. Matthew 13:30, 39-40.

The same point is made in the description of the net thrown into the sea gathering fish of various kinds, and how after that the good were sorted into vessels while the bad were thrown away; and this is how it will be at the close of the age, Matthew 13:47-50. What 'the close' is and that for the Church it entails events like these, see 1857, 2243.

[3] The reason why evils and falsities are separated in the case of people who are good is that the latter may not be left suspended between evils and goods and so that they may be raised up by means of goods into heaven. And the reason why goods and truths are separated in the case of the evil is so that they do not lead the upright astray by means of any goods present with them, and so that by means of their evils they may withdraw to the evil in hell. For in the next life such is the communication of all ideas comprising thought, and of all affections, that goods are communicated with the good, and evils with the evil, 1388-1390. Consequently unless separation took place countless harmful things would result, in addition to the fact that association together would not otherwise be possible. Yet all things are associated together in a very wonderful way, in heaven according to all the variations of love to the Lord and of mutual love, and consequently of faith, 685, 1394, and in hell according to all the variations of evil desires and of delusions resulting from these, 695, 1322. It should be recognized however that separation does not mean complete removal, for nothing anybody has once possessed is totally removed from him.