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])

161. To commit whoredom, and to eat idol sacrifices, signifies falsifications of truth and adulterations of good. This is evident from the signification of "committing whoredom," as being to falsify truths (of which see above, n. 141, and from the signification of "eating idol sacrifices," as being to appropriate evil (of which see also above, n. 141; to adulterate good is also signified, because appropriations of evil are, in things of the church, adulterations of good; for it is an application of its goods to evils, thus adulterating them. For example, the goods of the Israelitish church were signified by the altar, the sacrifices, and eating together of the things sacrificed; when these things were given over to Baal, goods were applied to evils (besides other like instances). It is the like in a church in which there are no representatives, when the Word is applied to confirm the evils of self, as is done by the papal body to gain dominion over the universal heaven. That "to commit whoredom and to eat idol sacrifices" signifies to falsify truths and adulterate goods, is also clear from this, that the deeds of Jezebel are in one expression called "whoredoms" and "witchcrafts," in the second book of Kings:

When Jehoram saw Jehu, he said, Is it peace, Jehu? and he said, What peace, so long as the whoredoms of thy mother Jezebel and her witchcrafts are many? (2 Kings 9:22).