The concept of a "church" in the Writings is both complex and beautifully organic, linked with teachings on the nature of the Lord and the resulting nature of mankind.

The Writings say that the Lord, in His essence - His actual substance - is perfect, infinite love, a love that powered creation, that is the ultimate source of reality, and that sustains reality constantly. That love is expressed in form as perfect, infinite wisdom, which gave form to creation and gives form to reality.

Deep stuff! You can read more about that elsewhere, but what matters here is that all of creation, from the smallest elements to the whole of the universe, reflects that same structure. It's present in nature itself, powered by the heat (love) and light (wisdom) of the sun. It's present in the essential forms of life, with plants (which are rooted; which change little; which are unfeeling; which are powered by light) representing elements of wisdom and animals (warm, feeling, mobile, ever-changing, powered by heat) representing forms of love. It's present in the near-universal division into male (wisdom) and female (love) aspects of plants and animals alike.

That structure is also in each of us. In common language we might call these our hearts and our minds - what we want and what we think. The Writings commonly talk of them as good (love; what we want in our hearts) and truth (wisdom; what we know in our minds) or as will (heart) and understanding (mind). Not only do these elements define us, they are also key to our spiritual fates. We can use them to accept the Lord's love, come into the good of life and ultimately go to heaven. We can also use them to reject the Lord's love and trot off to hell.

And there are further layers. The Writings say that all human societies are in human form, with functions analogous to the human body. This is true from small groups like families to large companies to entire nations and ultimately to both the entire human race in this world and the entirety of heaven in the next.

Among the most important human societies are, naturally, churches. Since the concept of a "church" is based on the human form, though, churches as referred to in the Writings can take many forms. At one end of the scale, any one person who has true ideas of right and wrong and lives by them is a church himself or herself. At the other end of the scale, all those in the whole world who believe in love of the neighbor – and act from that belief – collectively make up one church.

Many other varieties lie between those two extremes, but most references to "church" in the Writings mean the community of those who have the Word, know the Lord, and follow His commandments. These people have access to the best possible truth and deepest possible understanding about the nature of the Lord and what He wants from us.

Such a church plays a vital role: The Lord works through it to get ideas about being good into people's minds and the desire to be good into the inner recesses of their hearts, reaching far beyond that church itself to touch everyone in the world. In fact, the Writings say there is in essence a marriage between the Lord and the church, with the church in the role of the bride and wife, producing true ideas and good desires the way a wife produces children.

To protect this function, the Lord has made sure that throughout history (and a good bit of prehistory) there has always been a church filling this role.

The first of these was the Most Ancient Church, represented by Adam; it was inspired by love of the Lord. The second was the Ancient Church, represented by Noah; it was inspired by love of the neighbor and knowledge of the Lord. The third was the Israelitish Church, which had no interior love of good but preserved ideas of the Lord. The fourth was the primitive Christian church, which had a new, more direct understanding based on the Lord's teachings. The fifth, according to the Writings, is to be based on the deeper understanding offered through the Writings and their explanations of the Bible.

There is much more that could be said, but we'll just emphasize one other point:

We as individuals are who we are based on what we love, not what we know. We will go to heaven or to hell based on what we love, not what we know. Knowing, thinking and seeking truth are important things, but their purpose is to shape, guide and serve our loves; love is ultimately what matters. The Writings make it abundantly and repeatedly clear that it is the same with churches: They are ultimately based on love, not knowledge, on their determination to serve the neighbor, not their external forms of worship. And if churches share that common purpose of serving the neighbor then they are in essence one, with doctrinal variations being of little consequence.

(References: Apocalypse Revealed 533; Arcana Coelestia 407, 768, 1799 [3-4], 2048, 2853 [2-3], 2910, 2982, 3310, 3773, 3963 [2], 4292, 4672, 4723, 5826 [2-3], 6637, 6648, 8152, 9256 [4-5], 9276 [2]; Conjugial Love 116; Heaven and Hell 57; The Word 8; The Doctrine of the New Jerusalem Regarding the Sacred Scripture 99, 104)

5828. 'And I said, He has surely been torn to pieces' means a perception that it was destroyed by evils and falsities. This is clear from the meaning of 'saying' as perception, dealt with often; and from the meaning of 'being torn to pieces as being destroyed by evils and internal good represented by 'Joseph' was destroyed, 5805. 'Being torn to pieces' has this meaning because no other kind of tearing to pieces takes place in the spiritual world than that of good by evils and falsities. It is the same with death and anything having to do with death, by which is meant in the spiritual sense not natural death but spiritual death, which is damnation. No other kind of death occurs in the spiritual world. So too with 'a tearing to pieces'. This does not mean in the spiritual sense the kind of tearing to pieces that wild animals engage in, but the tearing to pieces of good by evils and falsities. Also, in the spiritual sense, 'wild animals that tear to pieces' means evil desires and derivative false ideas; and such ideas are also represented in the next life by wild animals.

[2] The good which constantly comes from the Lord to a person is destroyed by nothing other than evils and derivative falsities, and by falsities and consequent evils. For as soon as that constantly inflowing good, coming by way of the internal man, reaches the external or natural man it encounters evil and falsity, which - acting like wild animals - employ various methods to tear apart and annihilate that good. For that reason the inflow of good by way of the internal man is blocked and halted, and the interior mind through which the inflow comes is consequently closed. Only as much of what is spiritual is allowed through as will enable the natural man to reason and speak, though he does so in terms that are solely earthly, bodily, and worldly, either in opposition to what is good and true, or else in keeping with such but in a false or deceitful way.

[3] It is a universal law that an inflow adjusts itself to the outflow, and if the outflow is blocked, so is the inflow. Through the internal man there is an inflow of good and truth from the Lord, and through the external there should be an outflow, an outflow into life, that is, in the exercise of charity. As long as that outflow is taking place the inflow from heaven, that is, from the Lord by way of heaven, is continuous. If however no outflow takes place but something stands in the way in the external or natural man, namely evil and falsity which tear the inflowing good to pieces and annihilate it, it follows from the universal law mentioned above that the inflow adjusts itself to the outflow. All this being so, the inflow of good holds itself back and accordingly closes the internal through which the inflow comes; and that closing of it leads to stupidity in spiritual matters, which is so great that the person who is like this neither knows nor wishes to know anything at all about eternal life. At length he becomes so senseless that he raises falsity as an obstacle to truth, calling falsities truths and truths falsities, and raises evil as an obstacle to good, regarding evils as forms of good and forms of good as evils. In this way he tears good completely to pieces.

[4] The word 'torn' occurs in various places in the Word, the proper meaning of which is falsities that arise from evils, while that which is destroyed by evils is called 'a carcass'. When however the expression 'torn' is used by itself, both ideas are meant since the one includes the meaning carried by the other. It is different when the one is referred to together with the other, because in that case a distinction is being made. Since what had been torn meant in the spiritual sense what had been destroyed by falsities arising from evils, people were forbidden in the representative Church to eat anything torn. They would never have been forbidden to eat it if that spiritual evil had not been meant in heaven. Apart from this, what evil could have lain in eating flesh torn by a wild animal?

[5] Regarding their not eating anything torn the following is stated in Moses,

The fat of a carcass and the fat of that which has been torn may be put to any use, provided that you do not eat it at all. Leviticus 7:24.

In the same author,

He shall not eat a carcass or that which has been torn, to be defiled by it. I am Jehovah. Leviticus 12:8.

In the same author,

You shall be men who are sanctified to Me; therefore you shall not eat flesh torn in the field, you shall throw it to the dogs. Exodus 21:31.

In Ezekiel,

Ah Lord Jehovih! The prophet says, Behold, my soul has not been polluted, and from my youth even till now I have not eaten any carcass or that which has been torn, so that abominable flesh has not come into my mouth. Ezekiel 4:14.

From these quotations it is evident that it was an abomination to eat what had been torn, not because it had been torn but because a tearing to pieces of good by falsities arising from evils was meant, 'a carcass' on the other hand being the death of good caused by evils.

[6] A tearing to pieces of good by falsities and evils is also meant in the internal sense of the following places in David,

The wicked is like a lion, he desires to tear, and like a young lion who sits in hiding-places. Psalms 17:12.

Elsewhere,

They opened their mouth against me - a lion tearing and roaring. Psalms 22:13.

And in yet another place,

Lest like a lion they seize my soul, tearing it to pieces and there is none to deliver. Psalms 7:1.

'A lion' stands for those who lay waste the Church. Above, where Joseph was the subject - at the point where he was sold by his brothers, and his tunic, which had been dipped in blood, was sent to his father - his father too said at that time,

My son's tunic! An evil wild animal has devoured him; Joseph has been torn to pieces. Genesis 37:33.

'His having been torn to pieces' means being scattered by falsities arising from evils, see 4777.

8152. 'And he pursued the children of Israel' means the attempt to bring under his control those governed by faith bonded to charity. This is clear from the meaning of 'pursuing' as the attempt to bring under one's control, as in 8136; and from the representation of 'the children of Israel' as those who belong to the spiritual Church, dealt with often, thus those governed by faith bonded to charity. For members of that Church are governed by this faith both in doctrine and in life. The good of faith, which is charity, is the essential element, and so occupies first place with those who belong to the genuine spiritual Church. But with those with whom faith is separated from the good of faith both in doctrine and in life the truth of faith, or simply faith, is the essential element or occupies first place. The latter are not members of that Church, for life constitutes the Church, not doctrine except in the measure that it becomes applicable to life. From this it is evident that the Lord's Church is not in this particular location or in that, but that it resides wherever people lead lives in keeping with the commandments of charity, both within the kingdoms in which the Church exists and outside them. So it is that the Lord's Church is spread throughout the whole world, and yet is one; for when life constitutes the Church, and not doctrine separated from life, there is one Church. But when doctrine constitutes the Church there are many.