In the 61st chapter of Isaiah, there is a beautiful prophecy of the Lord's advent, and of the impact that it would have. It begins this way:

“The Spirit of the Lord God is upon Me, Because the Lord has anointed Me To preach good tidings to the poor; He has sent Me to heal the brokenhearted.... (Isaiah 61:1)

In the New Testament, in Luke 4:14-22, we see confirmation of this prophecy, in this story:

"14 And Jesus returned in the power of the Spirit into Galilee: and there went out a fame of him through all the region round about.

15 And he taught in their synagogues, being glorified of all.

16 And he came to Nazareth, where he had been brought up: and, as his custom was, he went into the synagogue on the sabbath day, and stood up for to read.

17 And there was delivered unto him the book of the prophet Esaias. And when he had opened the book, he found the place where it was written,

18 The Spirit of the Lord is upon me, because he hath anointed me to preach the gospel to the poor; he hath sent me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised,

19 To preach the acceptable year of the Lord.

20 And he closed the book, and he gave it again to the minister, and sat down. And the eyes of all them that were in the synagogue were fastened on him.

21 And he began to say unto them, This day is this scripture fulfilled in your ears.

22 And all bare him witness, and wondered at the gracious words which proceeded out of his mouth. And they said, Is not this Joseph's son?"

In this passage, who are the poor, and the brokenhearted? They are people who do not yet know enough real truth, or who therefore are not yet able to receive real good. They are people who "are ignorant of truth and who desire it." (Inner Meaning of the Prophets and Psalms 61).

Here's another source:

"These things (above) are said of the Lord. 'The poor' to whom Jehovah has anointed Him to preach good tidings, refers to those who are in few truths, and yet desire truths that their soul may be sustained by them. The 'broken in heart' stand for those who as a consequence are in grief." (Apocalypse Explained 811[17]).

Every person has two spiritual faculties that work together -- a will (the things we love), and an understanding (the things we know and believe in). We're born with both, and they gradually develop. Our original will is mostly selfish, and it needs to be gradually expunged, and replaced by a new unselfish will that the Lord wants to implant and develop in us. On our personal spiritual journeys, that's the the big thing that needs to happen.

Our understanding, at some points in that process, needs to step out ahead of the will, and learn true ideas, and construct them into a framework. There has to be a part of the will that directs the understanding to make this effort, and wants to use the framework. There's another part of the will that says -- no, not interested, don't bother, maybe later. But it's the unselfish part - the good part - that feels this driving need for truth. It's people who are in this state that are poor (needing to learn truth), and brokenhearted (in grief, and therefore wanting to learn truth, so that they can be good, and receive the Lord's love). See Arcana Coelestia 6854[3] and its related cross-references for an interesting discussion of this process.

3241. 'And the sons of Dedan were Asshurim, and Letushim, and Leummim' means the derivatives from the second division. This becomes clear from the representation of 'Dedan' as those governed by the good of faith, or to be precise, those governed by the truth of faith derived from good, 3240 (end). The fact that they are derivatives from the second division is self-evident. These three sons mean in particular the truths of faith derived from good, though just what each one means can indeed be stated but not confirmed from elsewhere in the Word since they are not mentioned again.

[2] In the Lord's kingdom there are countless variations to goods and truths, yet all those countless variations make up one heaven. Indeed there are so many that one community is in no sense exactly like another, that is, governed by the same good and truth, see 684, 685, 690. One heaven there is made up of many varying parts arranged by the Lord in such a way that they all accord. This accordance or harmony of the many is effected by the Lord through the relationship which each of them has to Him, 551. It is like the organs, members, and viscera of the body. None is exactly like another. Yet although they are all different from one another they nevertheless make one, through the relatedness of them all to one soul, and through this soul to heaven and so to the Lord. For anything that has no connection with the Lord is in reality nothing. From this it may be seen that specific differences in truth and good are countless. But the kinds of these, indeed the most general kinds, which belong to the spiritual Church, are meant by these sons and grandsons of Abraham by Keturah.

[3] Because members of the spiritual Church do not have perception, as those of the celestial Church do, of what good and truth are, but instead acknowledge as truths things which they have had to learn, they are therefore constantly engaged in discussion about them and in reasoning whether they are true. Everybody adheres to the teaching which his own Church upholds and calls it the truth. This is what gives rise to so many differences. Furthermore the majority make their minds up about goods and truths from appearances and illusions - each one in a different way from another. But no one does so from any perception; indeed they do not know what perception is. Since their understanding is so darkened as regards goods and truths of faith, it is no wonder that disagreements exist about the most essential truth of all, that is to say, about the Lord's Divine, His Human, and His Holy proceeding from these. Those who are celestial perceive that these are not three but one, but in the case of those who are spiritual a mental image of three remains, though they are willing to think of them as one. Since therefore disagreements exist regarding this most essential truth, it may be seen that the variations and differences in matters of doctrine are countless. From this one may know the origin of the derivatives meant by the names of those mentioned at this point. But although there are so many variations and differences in matters of doctrine, or so many derivatives, nevertheless they all together form one Church when everyone acknowledges charity to be the essential thing of the Church, or what amounts to the same, when everyone regards life as the end in view of doctrine - that is, when everyone asks, How does a member of the Church live? rather than, What does he think? For in the next life everyone is allotted a place by the Lord that accords with the good constituting his life, not with the truth he knows from doctrine separated from that good.