Jerusalem: the walled hill city of Judah that became the seat of Israel's kings and the one place chosen for worship, and whose name comes to stand for its people and their promised future as well as its streets
Jerusalem is a real town before it is anything else: a walled settlement on a narrow ridge in the hill country of Judah, held by another people when Israel arrived and listed in the old boundary records under its earlier name (יְבוּס). David took it, moved his court into it, and Solomon set a temple on the high ground above it. From that point the name does two jobs at once. It marks a place, and it carries everything that happened there.
So the same six letters can reach very different targets, and only the sentence tells you which:
- the years of Judah's kings are counted "in Jerusalem", which makes the name a shorthand for the throne
- the temple is the house of the LORD "in Jerusalem", which makes it shorthand for the one place worship belonged
- a warning goes out to "the inhabitants of Jerusalem", so the name reaches the people and not the streets
- poets call the city Daughter, speak to her, and grieve over her as a woman
- and the promises of homecoming name her as the city God will rebuild
Zion (צִיּוֹן) is the name that runs alongside it, and the two are rarely interchangeable. Jerusalem is the working name: the walls, the gates, the census lists, the politics, the name a foreign king uses in a war report. Zion is the chosen name, reached for when the point is that God picked this place. Isaiah 2:3 keeps them a hair apart on purpose, with instruction going out from the one and the word of the LORD from the other.
The name's most frequent partner, though, is not Zion but Judah (יְהוּדָה), the region around the city, so that countryside and capital are named together as one community that shares one judgment and one rescue. The word is also strikingly absent from the first five books of the Bible, and then floods the later ones: Jeremiah and 2 Chronicles alone account for roughly a third of its appearances.