'Holy City' in the Bible

And the outer court of the temple leave out, and measure it not; because it is given to the Gentiles: and they will tread down the holy city forty-two months.

And I saw the holy city, the new Jerusalem, coming down out of the heaven from God, prepared as a bride is adorned for her husband.

And he carried me away in the Spirit to a mountain great and high, and showed me the holy city, Jerusalem, coming down out of the heaven from God,

and if any one may take from the words of the book of this prophecy, God will take his part from the tree of life, and from the holy city, from the things which are written in this book.