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.

(参照: 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)

10033. Since the present chapter deals with the sacrifice and the burnt offering through which Aaron and his sons were consecrated to the priestly office a little more will be stated regarding the blood and the fat. All the blood of a sacrifice or of a burnt offering had to be poured out at the altar and all the fat had to be burned on the altar, as the statutes and laws in Leviticus relating to burnt offerings and sacrifices make clear. The reason why this was done to the blood and fat was that the blood meant Divine Truth and the fat Divine Good. The fact that the blood meant Divine Truth is clear from what has been shown regarding 'blood' in 4735, 6378, 6978, 7317, 7326, 7850, 9127, 9393, and that the fat meant Divine Good is clear from what has been shown in 5943.

[2] That 'blood' means Divine Truth is perfectly clear in Ezekiel,

Gather yourselves from all around to My sacrifice which I am sacrificing for you, a great sacrifice upon the mountains of Israel, so that you may eat flesh and drink blood. You will eat the flesh of the mighty, and drink the blood of the princes of the earth. You will eat fat till you are glutted, and drink blood till you are drunk, from My sacrifice which I will sacrifice for you. You will be glutted at My table with horse, chariot, the mighty, and every man of war. Thus will I set My glory among the nations. Ezekiel 39:17-22.

Anyone can see that 'blood' is not used to mean blood here, for it states that they were going to drink the blood of the princes of the earth, doing so till they were drunk, and also that they were going to eat fat till they were glutted, and then that they would be glutted with horse and chariot. From these statements it is evident that 'blood' is used to mean something other than blood, 'the princes of the earth' to mean something other than princes of the earth, and also 'fat' as well as 'horse and chariot' something other than fat, or horse and chariot. What is meant however none can know except through the internal sense. This shows that 'blood' means Divine Truth, 'the princes of the earth' the Church's primary or leading truths, 'fat' Divine Good, 'horse' the internal sense of the Word, and 'chariot' actual doctrinal teachings derived from there.

'Blood' means Divine Truth; this is clear from the places referred to above.

'The princes of the earth' means primary truths, 5044.

'The earth' means the Church, 9325.

'Horse' means the internal sense of the Word, 2760-2762.

'Chariot' means doctrinal teachings, 5321, 8215.

[3] From all this it is now evident what the meaning is of the Lord's words in John,

Jesus said, Unless you eat the flesh of the Son of Man and drink His blood you will have no life in yourselves. Whoever eats My flesh and drinks My blood has eternal life, and I will raise him up at the last day. For My flesh is truly food, and My blood is truly drink. He who eats My flesh and drinks My blood abides in Me, and I in him. John 6:53-56.

'Flesh' means Divine Good, see 3813, 7850, 9127; and 'the Son of Man' whose flesh they were to eat and blood they were to drink means the Lord in respect of Divine Truth emanating from Divine Good, 9807.

[4] But the fact that 'fat' means Divine Good is clear in Isaiah,

Jehovah will make for all peoples on this mountain a feast of fat things. Isaiah 25:6.

In the same prophet,

Attend [diligently] to Me and eat what is good, and let your soul delight itself in fatness. Isaiah 55:2.

And in Jeremiah,

I will fill the soul of the priests with fat, and My people will be satisfied with My goodness. Jeremiah 31:14.

From these quotations it becomes clear why all the fat of a sacrifice was burned on the altar and why all the blood was poured out at the side of it.

[5] Because blood and fat were signs of those Divine Entities the Israelite people were totally forbidden to eat fat or blood, as is clear in Moses,

[This shall be] a perpetual statute throughout your generations: You shall eat no fat and no blood. Leviticus 3:17.

In the same author,

You shall eat no fat, neither of ox, nor sheep, nor she-goat. Everyone who eats fat from a beast, from one that is offered as a fire-offering to Jehovah, that soul eating it will be cut off from his peoples. Leviticus 7:23, 25.

And again in the same author,

Whoever eats any blood, I will set My face against the soul eating blood and will cut him off from among his people. Leviticus 17:10-14; Deuteronomy 12:16, 23-25.

[6] The reason why eating blood and fat was so strictly forbidden was that eating them represented the profanation of Divine Truth and Divine Good. For the Israelite and Jewish nation was interested in outward forms but not their inner substance, so that in their faith and love there was no Divine Truth nor any Divine Good; and their worship was external devoid of these. This was because they were ruled by self-love and love of the world more than other nations; consequently they were steeped in evils gushing out of those loves, these evils being contempt for others, enmity, hatred, vengeance, brutality, and cruelty. This also was the reason why internal truths were not revealed to them, for if these had been revealed that nation would have inevitably profaned them. Such was the character of that nation, as may be seen in the places referred to in 9320(end), 9380. Therefore they would have represented profanation if they had eaten blood and fat; for whatever was established among them was representative of the interior things of the Church and heaven.

[7] From these considerations it is even more evident what the meaning is of the words in Ezekiel 39:17-22, dealt with above, stating that they would eat fat till they were glutted and drink blood, the blood of the princes of the earth, till they were drunk. That is to say, the meaning is that when inner virtues were opened up, those with whom these virtues existed, that is, faith in and love to the Lord, would have Divine Truth and Divine Good imparted to them as their own, as happened among gentile nations when the Lord came into the world. Therefore also those words go on to say, Thus will I set My glory among the nations, 'glory' meaning Divine Truth emanating from the Lord as it exists in heaven, 9429, and 'the nations' meaning all who are governed by good, 1259, 1260, 1416, 1849, 4574, 6005, 8771, 9256.

[8] This the Lord Himself corroborates, in His declaration that His flesh was truly food and His blood was truly drink, and whoever ate His flesh and drank His blood would abide in Him, and He in that person, John 6:55-56, and also in His institution of the Holy Supper, in which they were to eat His flesh and to drink His blood, Matthew 26:26-29, by which receiving Divine Good and Divine Truth from Him and making them their own was meant. Receiving Divine Good and Divine Truth from the Lord and making them their own is possible only with those who acknowledge the Lord's Divinity, for this is the first and most essential of all matters of belief within the Church. To no others can the way to heaven be opened, because the whole of heaven assents to that belief, and therefore Divine Truth emanating from the Lord's Divine Good, meant here by 'blood', cannot be imparted to them. Therefore let anyone who is within the Church beware of refusing to believe in the Lord and also His Divinity; for heaven is closed and hell opened to that refusal. For those people are separated from the Lord, and so are separated from heaven, where the Lord's Divinity is the All in all since it composes heaven. And when heaven has been closed, knowledge of the truths of faith derived from the Word and from the teachings of the Church indeed exists, but not a particle of faith that is real faith because real faith comes from above, that is, from the Lord by way of heaven.

[9] The Lord spoke in this manner, that is to say, He called the Divine Good emanating from Himself His flesh, and the Divine Truth emanating from His Divine Good His blood, because the Word, which sprang from Him, was His Divinity filling the whole of heaven. Such a Word must manifest itself through the use of correspondences, as a result of which it is representative and carries a spiritual meaning in every single part; for in this and no other way could it link members of the Church to angels in heaven. For when people in the world understand the Word according to its literal meaning angels understand it according to its inner meaning. Thus instead of the Lord's flesh they understand Divine Good, and instead of His blood they understand Divine Truth, both emanating from the Lord. As a consequence that which is holy flows in by way of the Word.