Jerusalem, on Mount Zion, signifies the doctrine of love to the Lord, and how it governs your life. Jerusalem first comes to our attention in 2 Samuel 5, when King David takes the city from the Jebusites and makes it his capital. In the next chapter he brings the Ark of the Covenant there, and later it is where Solomon builds the temple, and his own palace. From then on Jerusalem is the center of worship of the Israelitish church. It is the place where the Lord was presented in the temple as a baby, where He tarried to talk to the priests at age twelve, where He cleansed the temple, had the last supper, was crucified and then rose. It is a central place in both the old and new Testaments. The city was built on Mount Zion, the highest point of the mountains of Judea. A city, in the Word, represents doctrine, the organized knowledge of the truths of the church. Mountains represent love of the Lord and the consequent worship. If you put those things together, Jerusalem on Mount Zion signifies the doctrine of love to the Lord, and how it governs your life. This is why David was led to make Jerusalem the most important city of the land, and why all worship was conducted there. And this is also why Jeroboam was condemned for introducing idol worship in Samaria. In the Book of Revelation, John's vision of the city New Jerusalem descending from God is a prophecy of a new dispensation of doctrine coming from the Lord.

(Notae: Arcana Coelestia 4539, 8938; The Apocalypse Explained 365 [35-38])

4815. 'That Judah went down from his brothers' means the descendants of Jacob, in particular the tribe of Judah which was separated from the rest. This is clear from the representation of 'Judah' in the universal sense as the descendants of Jacob, and in a particular sense as the tribe called the tribe of Judah; and from the meaning of 'going down from his brothers' as being separated from the rest of the tribes, here as a departure into evil worse than theirs. 'Going down' implies a decline into evil, since 'going up' implies a lifting up to what is good, 3084, 4539. The reason for this is, as also stated already, that the land of Canaan represented the Lord's kingdom, and Jerusalem and Zion in that land the inmost part of this kingdom. But the regions outside the boundaries of that land represented things outside the Lord's kingdom, namely falsity and evil. Consequently the expression 'to go down' was used when going from Zion and Jerusalem towards the boundaries of the land, but 'to go up' when going from the boundaries towards Jerusalem and Zion. This is why 'going up' implies a lifting up to truth and goodness, and 'going down' a decline into falsity and evil. As the reference here is to the falsity and evil into which the tribe of Judah declined, the expression 'Judah went down' is used, and after that 'he turned aside to a man, an Adullamite', 'turning aside' meaning that it declined into falsity and then into evil.

[2] It is well known that the tribe of Judah was separated from the rest of the tribes. The reason for the separation was so that the tribe might represent the Lord's celestial kingdom, and the rest of the tribes His spiritual kingdom. This being so, Judah also describes, in the representative sense, the celestial man, and in the universal sense the Lord's celestial kingdom, 3654, 3881. The rest of the tribes however were referred to by the single term 'the Israelites', for in the representative sense Israel describes the spiritual man, and in the universal sense the Lord's spiritual kingdom, 3654, 4286.

[3] The decline of the tribe of Judah into evil worse than that of the rest is the particular meaning of these words - 'and Judah went down from his brothers, and turned aside'. The departure of the tribe of Judah into evil worse than that of the rest is clear from many places in the Word, in particular in the Prophets, as in Jeremiah,

Her treacherous sister Judah saw when, because of all the ways in which estranged Israel committed adultery, I sent her away and gave her a decree of divorce; yet her treacherous sister Judah did not fear, but she also went and committed whoredom, so much so that with the voice of her whoredom she profaned the land; she committed adultery with stone and wood. Yet for all this treacherous Judah has not returned to Me. Estranged Israel has justified her soul more than treacherous Judah. Jeremiah 3:7-11.

And in Ezekiel,

Her sister did indeed see, yet she corrupted her own love more than she, and her own acts of whoredom beyond her sister's acts of whoredom. Ezekiel 23:11-end.

These, in addition to many others elsewhere, are references to Jerusalem and Samaria, that is, to the tribe of Judah and the tribes of Israel.

[4] Described in the internal sense of this chapter is the way in which that tribe sank into falsity, and from this into evil, and at length into that which was wholly idolatrous. This, it is true, is described in the internal sense even before that tribe was separated from the rest and before it came to be as mentioned above. But that which is contained in the internal sense is Divine, and to the Divine future things are also present ones. See what was foretold about that nation in Deuteronomy 31:16-21; 32:15-43.