Reference: Zion, Sion, Mount Zion
This was in reality a part of Jerusalem, being one of the mountains on which Jerusalem was built. Zion is often called 'the city of David,' it was where he dwelt. 2Sa 5:7; 1Ch 11:5; Mic 3:10,12. Which part of Jerusalem was thus designated is now a disputed point: some few contend for the north-west; but most believe it to have been on the south-west, and to have extended farther south than the present wall of the city. It would in this case have been in proximity to the temple on the south-east, which could have been reached by a bridge over the Tyropoeon valley. 2Ch 5:2. In Ps 48:2, occur the words "the joy of the whole earth is mount Zion, on the sides of the north, the city of the great King." This has been thought to mean that mount Zion was in the north of the city; but may it not signify that on the north side of Zion is the city of the great King, that is, Jerusalem? The psalm is clearly millennial. Zion, having failed as a part of Jerusalem, was to be ploughed as a field. Mic 3:12.
The term Zion has constantly in scripture a metaphorical sense. It represents the intervention of sovereign grace in the person of God's elect king, when Israel were utterly helpless, and the ark had been given into the hands of the enemy. The ark was brought by David to the city of David, and this may have led to Zion being regarded as the centre of blessing, and as a source from whence blessing proceeded, as it often is in the Psalms. Ps 87:2; 149:2; etc. The favoured people of God are often spoken of as DAUGHTERS OF ZION, Israel are constantly thus addressed in the Prophets, whether to be blamed for their waywardness and punished; or to be cheered with the prospect of future prosperity. And in these prophecies of their coming exaltation, Zion is referred to as the seat of the Messiah's royal power on earth, as in Isa 52:1-8; 60:14; Heb 12:22. In scripture Zion never means the church: it always signifies blessing on earth, and is specially in connection with Israel, when the ultimate blessing of the nations will be through Israel; nevertheless Christians now enter into its spiritual import as being under the reign of grace while here on earth.