Σιών indecl, in NT anarth, but in LXX when used of the city of Jerusalem, ἡ Σ. (Heb. צִיּוֹן),
Zion; 1)
the mountain: in typical sense, of the Church, Heb.12:22; of heaven, Rev.14:1. 2) The city, i.e. Jerusalem; in poetical sense; (a)
of the inhabitants: θυγάτηρ Σ, Mat.21:5, Jhn.12:15 " (LXX); (b)
in wider sense, of Israel: Rom.11:26; (with) figuratively: τίθήμι ἐν Σ λίθον, Rom.9:33, 1Pe.2:6 " (LXX). (
AS)