64. The reason so many varied elements act as one in an individual is that there is nothing whatever there that does not contribute something to the common good and do something useful. The inclusive body serves its parts and the parts serve the inclusive body because the inclusive body is made up of parts and the parts make up the inclusive body. So they provide for each other respectively, they focus on each other mutually, and they are united in the kind of form that gives every single component a relationship to the inclusive entity and its well-being. This is what enables them to act as a unit.

[2] It is the same with assemblies in the heavens. People there unite in this kind of form in pursuit of any worthwhile activity. As a result any individuals who do not serve some use for the larger body are cast out of heaven because they are misfits. To "serve some use" is to intend well to others for the sake of the common good, while "not to serve some use" is to intend well to others not for the sake of the common good but for the sake of oneself. People who act in this latter fashion are people who love themselves above all, while people who act in the former fashion are the ones who love the Lord above all. This is why people in heaven act in unison not from themselves but from the Lord. They in fact focus on him as the unique source of all, and on his kingdom as the commonwealth that is to be cared for. This is the meaning of the Lord's words, "Seek first the kingdom of God and his righteousness, and everything will be given you in addition" (Matthew 6:33). To "seek his righteousness" is to seek his good. ¹

[3] There are people who in this world love the good of their country more than their own and the good of their neighbor as their own. They are the ones who love and seek the kingdom of the Lord in the other life, since there the kingdom of the Lord takes the place of one's country. Further, people who love to do good to others not for self-centered reasons but for the sake of the good itself are people who love their neighbor, since in the other life the good is one's neighbor. ² All individuals who are of this quality are in the universal human - that is, in heaven.

Фусноте:

6706. The different kinds of neighbour - which a member of the Church ought to be thoroughly acquainted with if he is to know the true nature of charity - are determined by the good present in each individual. And since all good comes from the Lord, the Lord is in the highest sense and a supereminent degree the Neighbour and origin of the neighbour. From this it follows that a person is the neighbour in the measure Lord resides with him, since nobody receives the Lord, that is, the good which comes from Him, in the same way as another, no one person is therefore the neighbour in the same way as another. For all without exception in heaven and all without exception on earth differ from one another in good. Good is never exactly one and the same with any two people; variation is essential, in order that each kind of good may continue to exist by itself. But no one, not even an angel, can know all those variations, thus all the distinctions of the neighbour that are determined by the way the Lord is received, that is, the good coming from Him. One can know them in only an overall way, that is, know the general kinds of variation and some of the specific kinds of these. Nor does the Lord demand anything more of a member of the Church than that he should lead a life in keeping with what he knows.