'Holy City' in the Bible

And the princes of the people lived in Jerusalem. And the rest of the people also cast lots, to bring one of ten to dwell in Jerusalem the holy city, and nine parts in the other cities.

All the Levites in the holy city were two hundred eighty-four.

(for they call themselves of the holy city, and stay themselves on the God of Israel; the LORD of hosts is his name):

Awake, awake, put on your strength, Zion; put on your beautiful garments, Jerusalem, the holy city: for henceforth there shall no more come into you the uncircumcised and the unclean.

Seventy weeks are decreed on your people and on your holy city, to put an end to the transgression, and to make an end to sin, and to atone for iniquity, and to bring in everlasting righteousness, and to seal up vision and prophecy, and to anoint the most holy place.