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.

2689. 'And lifted up her voice and wept' means a further degree of grief. This becomes clear from the meaning of 'lifting up the voice and weeping' as the utmost extremity of grief, for weeping with a loud voice is nothing else. Described in this verse is a state of desolation of truth and of withdrawal from truths, as experienced by those who are becoming spiritual. What this state is like must be explained briefly: People who are not able to be reformed have no knowledge at all of what it is to grieve on account of being deprived of truths, for they imagine that no one can possibly become distressed for a reason such as that. The only circumstances, they believe, which can lead to such distress exist when someone is deprived of those good gifts to men that are of a bodily and worldly kind, such as health, position, reputation, wealth, and life. But those who are able to be reformed believe altogether differently. They are maintained by the Lord in the affection for good and in the thought of truth, and therefore come to be distressed when deprived of these.

[2] It is well known that all distress and grief are the result of a person's being deprived of the things for which he has affection, that is, which he loves. Those whose affection is solely for bodily and worldly things, that is, who love solely these, grieve when deprived of them, whereas those whose affection is for spiritual goods and truths, and who love these, grieve when deprived of them. The life in any person is nothing else than affection or love. From this one may see the nature of the state of those who are desolated as regards the goods and truths for which they have affection, that is, which they love; that is to say, one may see that their state of grief, being more interior, is more severe, and that in being deprived of good and truth it is not death of the body which they are bothered about but eternal death. It is their state which is described here.

[3] So that it may also be known which people can be maintained by the Lord in the affection for good and truth and so be reformed and become spiritual, and which ones cannot, this too must be explained briefly. In childhood everyone, when being for the first time endowed with goods and truths, is maintained by the Lord in the affirmative attitude that anything said or taught by parents and teachers is true. With those who are able to become spiritual this affirmative attitude is strengthened by means of facts and cognitions, for whatever they learn and is relevant introduces itself into the affirmative outlook and strengthens it, leading more and more towards affection for it. These are ones who become spiritual in accordance with the essence of the truth in which they have faith, and who are victorious in temptations. But it is quite different with those who are not able to become spiritual. Although in childhood an affirmative attitude exists with them, when they are older they allow doubts to enter in which thus destroy the affirmative attitude towards good and truth. And when they reach adult years they allow denials to enter in, and even the affection for what is false to enter in. If such people were led into temptations they would give in completely. Consequently they are kept free from them.

[4] But the real reason why they allow doubts and subsequently denials to enter in may be traced back to their life of evil. People who lead a life of evil cannot possibly do otherwise. The life in any person, as has been stated, is affection or love, and as is the nature of that affection or love so is the nature of his thought. The affection for evil and the thought of truth never join themselves together. In cases where they seem to join themselves, they do not in fact do so, for the thought of truth exists without the affection for it. With such people therefore truth is not truth, but merely a sound or something on the lips, from which the heart is far away. Even very wicked people can know such truth, better than anybody else sometimes. Some are also so strongly persuaded by truth of that kind that no one can see it as other than genuine. But it is not genuine truth if the life of good is absent. It is affection belonging to self-love or love of the world which causes that strong persuasion of it, which they also defend with a vehemence that is evidence of apparent zeal; indeed they go so far as to condemn people who do not receive it or believe it in a similar way. But this kind of truth varies from one person to another according to his basic way of thinking, the strength of that truth depending on the strength of his self-love or his love of the world. It is, it is true, born together with evil, but it does not join itself to evil, and therefore in the next life is rooted out. It is different in the case of those who lead a life of good; in them the truth itself finds its soil, and its ability to grow, and from the Lord its life.