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)

57. We can say the same of the church as we have of heaven, since the church is the Lord's heaven on earth. It also has many components, and yet each is called a church and is a church to the extent that the qualities of love and faith rule within it. In it, the Lord forms a single whole out of the varied elements, and therefore makes a single church out of many churches. ¹

Much the same can be said of the individual member of the church as has been said about the church in general, namely that the church is within and not outside, and that anyone is a church in whom the Lord is present in the qualities of love and faith. ²

Much the same can be said of the individual who has the church within as has been said about the angel who has heaven within, that such an individual is a church in least form as the angel is a heaven in least form. Even more, we can say that the individual who has the church within is a heaven just as much as an angel is, for we have been created to enter heaven and become angels. So anyone who has the quality of goodness from the Lord is an angel-person. ³

It is worth noting what we have in common with angels and what we possess that they lack. We have in common with angels the fact that our deeper levels are formed in the image of heaven and that we also become images of heaven to the extent that we participate in the qualities of love and faith. What we have that angels lack is that our more outward levels are formed in the image of this world; and that to the extent that we are engaged in what is good, the world within us is subordinated to heaven and serves it; ⁴ and that then the Lord is present with us on both levels as he is in his heaven. He is actually present on both levels in his divine order, for God is order. ⁵

Footnotes:

51. Of sciences and knowledges, by which the internal spiritual man is opened.

Those things are called scientifics, which are in the external or natural man, and its memory, but not those which are in the internal or spiritual man (n. 3019-3020, 3293, 3309, 4967, 9918, 9922). Scientifics, as belonging to the external or natural man, are respectively instruments of service, inasmuch as the external or natural man is made to serve the internal or spiritual man, just as the world is made to serve heaven (n. 5077, 5125, 5128, 5786, 5947, 10272, 10471). The external man is respectively the world, because the laws of Divine order existing in the world are inscribed therein; and the internal man is respectively heaven, because the laws of Divine order existing in heaven are inscribed therein (n. 4523-4524, 5368, 6013, 6057, 9278-9279, 9283, 9709, 10156, 10472); and in the work on Heaven and Hell (n. 51-58).

There are scientifics which concern natural things, scientifics which relate to the civil state and life, scientifics which relate to the moral state and life, and scientifics which relate to the spiritual state and life (n. 5774, 5934). But for distinction's sake, those which relate to the spiritual state and life are called knowledges, consisting principally of doctrinals (n. 9945).

Man ought to be imbued with sciences and knowledges, since by these he learns to think, then to understand what is true and good, and finally to be wise, that is 129 to live according to them ¹ (n. Arcana Coelestia 129, 1450-1451, 1453, 1548, 1802). Scientifics and knowledges are the first things, on which is built and founded the civil, moral, and spiritual life of man; but they are to be learned for the sake of the use of life as their end (n. 1489, 3310). Knowledges open the way to the internal man, and then conjoin it with the external according to uses (n. 1563, 1616). The rational is born by sciences and knowledges (n. 1895, 1900, 3086). Yet not by sciences and knowledges themselves, but by the affection of uses from them, and according to such affection (n. 1895). The internal man is opened and successively perfected by sciences and knowledges, provided man has some good use for an end, particularly a use that regards eternal life (n. 3086). Then the scientifics and knowledges which are in the natural man meet the spiritual things from the celestial and spiritual man and adopt those which agree (n. 1495). Uses of heavenly life are then extracted, refined, and elevated by the Lord, through the internal man, from the scientifics and knowledges which are in the natural man (n. 1895-1896, 1900-1902, 5871, 5874, 5901). And the scientifics which are incongruous and adverse are rejected to the sides and exterminated (n. 5871, 5886, 5889). The sight of the internal man calls nothing forth from the scientifics and knowledges of the external man, but such as are of its love (n. 9394[1-6]). Scientifics and knowledges are disposed in bundles, and conjoined according to the loves which introduced them (n. 5881). Then in the sight of the internal man, those which are of the love are in the middle and in clearness, but those which are not of the love are at the sides and in obscurity (n. 6068, 6084). Scientifics and knowledges with man are successively implanted in his loves, and dwell in them (n. 6325). Man would be born into every science, and thereby into intelligence, if he were born into love to the Lord and love towards the neighbor; but because he is born into the love of self and the world, he is born in total ignorance (n. 6323, 6325). Science, intelligence, and wisdom are the sons of love to the Lord and of love towards the neighbor (n. 1226, 2049, 2116).

Scientifics and knowledges, because they are of the external or natural man, are in the light of the world; but truths, which are become truths of love and faith, and have thus obtained life, are in the light of heaven (n. 5212). Nevertheless the truths, which have thus obtained life, are comprehended by man through natural ideas (n. 5510). Spiritual influx is through the internal man into the scientifics and knowledges which are in the external (n. 1940, 8005). Scientifics and knowledges are the receptacles and as it were the vessels of the truth and good of the internal man (n. 1469, 1496, 3068, 5489, 6004, 6023, 6052, 6071, 6077, 7770, 9922). Therefore by "vessels" in the Word, in the spiritual sense, are signified scientifics and knowledges (n. 3068-3069, 3079, 9394, 9544, 9723-9724). Scientifics are as it were mirrors, in which the truths and goods of the internal man appear, and are perceived as in an image (n. 5201[1-7]). And there they are together as in their ultimate (n. 5373, 5874, 5886, 5901, 6004, 6023, 6052, 6071, 6077). Scientifics, because they are in the light of the world, are involved and obscure respectively to those things which are in the light of heaven; thus the things which are in the external man respectively to those in the internal (n. 2831). For which reason also by "involved" in the Word is signified what is scientific (n. 2831). So also by "the obscurity of a cloud" (n. 8443, 10551).

Every principle is to be drawn from the truths of doctrine from the Word, which are first to be acknowledged, and then it is allowable to consult scientifics in order to confirm those truths, and thus they are corroborated (n. 6047). Thus it is allowable for those who are in the affirmative concerning the truths of faith, intellectually to confirm them by scientifics; but not for those who are in the negative, because a preceding affirmative draws all to favor its side, and a preceding negative draws all to its side (n. 2568, 2588, 3913, 4760, 6047). There is a doubting affirmative, and a doubting negative, the former with some who are good, and the latter with the evil (n. 2568). To enter from the truths of faith into scientifics is according to order; but on the other hand, to enter from scientifics into the truths of faith is contrary to order (n. 10236). In as much as influx is spiritual, and not physical or natural, thus from the truths of faith, because these are spiritual, into scientifics, because these are natural (n. 3219, 5119, 5259, 5427-5428, 5478, 6322, 9109-9110).

Whoever is in a doubting negative state, which in itself is a negative, and says that he will not believe until he is persuaded by scientifics, will never believe (n. 2094, 2832). They who do so, become insane as to those things which are of the church and heaven (n. 128-130). They fall into the falsities of evil (n. 232-233, 6047). And in the other life, when they think about spiritual things, they are as it were drunken (n. 1072). A further description of them (n. 196). Examples to illustrate that spiritual things cannot be comprehended, if the order of entering into them be inverted (n. 233, 2094, 2196, 2203, 2209). Many of the learned are more insane in spiritual things, than the simple, because they are in the negative, and have abundance of scientifics, by which they confirm the negative (n. 4760). An example of a learned man, who could understand nothing concerning spiritual life (n. 8629). They who reason from scientifics against the truths of faith, reason sharply, inasmuch as they do it from the fallacies of the senses, which captivate and persuade, for it is with difficulty these can be shaken off (n. 5700). They who understand nothing of truth, and they also who are in evil, can reason concerning the truths and goods of faith, and yet be in no enlightenment (n. 4214). Only to confirm a dogma, is not the part of an intelligent man, because falsity can be as easily confirmed as the truth (n. 1017, 2482, 2490, 4741, 5033, 6865, 7012, 7680, 7950, 8521, 8780). They who reason concerning the truths of the church, whether a thing be so or not, are evidently in obscurity respecting truths, and not yet in spiritual light (n. 215, 1385, 3033, 3428).

There are scientifics which admit Divine truths, and others which do not (n. 5213). Vain scientifics ought to be destroyed (n. 1489, 1492, 1499-1500). Those are vain scientifics which regard for their end and confirm the loves of self and the world, and which withdraw from love to the Lord and love towards the neighbor because such scientifics shut up the internal man, so that he is not then capable of receiving anything from heaven (n. 1563, 1600). Scientifics are the means of becoming wise, and the means of becoming insane; and by them the internal man is either opened or shut; and thus the rational is either cultivated or destroyed (n. 4156, 8628, 9922).

Sciences after death are of no account, but only those things which man has imbibed in his understanding and life by means of sciences (n. 2480). Nevertheless all scientifics remain after death, but they are quiescent (n. 2476-2479, 2481-2486).

The same scientifics which with the evil are falsities because applied to evils, with the good are truths, because applied to goods (n. 6917). Scientific truths with the evil are not truths, however they may appear as truths when spoken, because within them there is evil, and consequently they are falsified; and the science of those men by no means deserves to be called science, inasmuch as it is destitute of life (n. 10331).

It is one thing to be wise, another to understand, another to know, and another to do; but still, with those who are in spiritual life, they follow in order, and correspond, and are together in doing or in deeds (n. 10331). It is also one thing to know, another to acknowledge, and another to have faith (n. 896).

What is the quality of the desire of knowing, which spirits have is shown by an example (n. 1973). Angels have an immense desire of knowing and of becoming wise, inasmuch as science, intelligence and wisdom, are spiritual food (n. 3114, 4459, 4792, 4976, 5147, 5293, 5340, 5342, 5410, 5426, 5576, 5582, 5588, 5655, 6277, 8562, 9003).

The chief science with the ancients was the science of correspondences, but at this day it is lost (n. 3021, 3419, 4280, 4844, 4964, 4966, 6004, 7729, 10252). The science of correspondences flourished with the orientals, and in Egypt (n. 5702, 6692, 7097, 7779, 9391, 10407). Thence came their hieroglyphics (n. 6692, 7097). The ancients by the science of correspondences introduced themselves into the knowledges of spiritual things (n. 4749, 4844, 4966). The Word is written by mere correspondences, whence its internal or spiritual sense, the existence of which cannot be known without the science of correspondences, nor can the quality of the Word (n. 3131, 3472-3485, 8615, 10687). How much the science of correspondences excels other sciences (n. 4280).

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