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.

3720. 'This is nothing other than the house of God' means the Lord's kingdom as it exists in the ultimate degree of order. This is clear from the meaning of 'the house of God'. In the Word 'the house of God' is referred to in many places, and in the external sense, that is, literally, it means a building where holy worship takes place. But in the internal sense it means the Church, in the more universal sense it means heaven, and in the most universal the Lord's kingdom. In the highest sense however it means the Lord Himself as regards the Divine Human. But in the Word sometimes the expression 'House of God' is used and sometimes 'Temple'. The two are similar in meaning, the difference being that the expression 'House of God' is used when the subject is good but 'temple' when the subject is truth. From this it is evident that 'the House of God' means the Lord's celestial Church, and in the more universal sense the heaven of celestial angels, in the most universal the Lord's celestial kingdom, and in the highest sense the Lord as regards Divine Good; whereas 'the Temple' means the Lord's spiritual Church, and in the more universal sense the heaven of spiritual angels, in the most universal the Lord's spiritual kingdom, and in the highest the Lord as regards Divine Truth, see 2048. The reason why 'the House of God' means that which is celestial and the dwelling-place of good, while 'the Temple' means that which is spiritual and the dwelling-place of truth, is that 'a house' in the Word means good, see 710, 2233, 2559, 3128, 3652, and among the most ancient people used to be built of pieces of wood for the reason that 'wood' meant good, 643, 1110, 2784, 2812, whereas 'the Temple' means truth because it was built of stones - 'stones' meaning truths, see 643, 1296, 1298.

[2] These meanings that 'pieces of wood' and 'stones' possess are clear not only from the Word where they are mentioned but also from representatives in the next life. For people who assume that merit lies in good works seem to themselves to be cutting wood, and those who assume that it lies in truths, that is to say, people who have believed that they knew more truths than anybody else and yet have lived wickedly, seem to themselves to be breaking up stones. I have often seen such people wood-cutting or stone-breaking, from which the meaning of 'wood' and of 'stone' was made clear to me - that good is meant by 'wood' and truth by 'stone'. It has in like manner been made clear to me from the fact that when I have seen a wooden house the concept of good has instantly presented itself, and when I have seen a stone house the concept of truth has done so. And I have also learned from angels about this matter. This is why, when in the Word 'the House of God' is mentioned, the concept of good presents itself to angels, the kind of good depending on the nature of the subject that is being dealt with. And when 'the Temple' is mentioned, the concept of truth presents itself, the kind of truth depending on the subject that is being dealt with. From this one may also deduce how deeply and inwardly concealed the heavenly arcana lie in the Word.

[3] The reason 'the House of God' here means the Lord's kingdom as it exists in the ultimate degree of order is that the subject is Jacob who, as often shown already, represents the Lord's Divine Natural. The natural exists in the ultimate degree of order, for the natural encompasses all interior degrees and includes them all together within itself. And since they are included all together within the natural, and so countless things are beheld as a single whole, obscurity exists there compared with other degrees. This obscurity too has been dealt with frequently.