Jerusalem is builded as a city that is compact together:
Jerusalem is builded as a city that is compact together - the admiring language of the pilgrims. The article in the Hebrew favours the translation, 'Jerusalem, the builded one (the well-built one (Junius and Tremellius): so Daniel 4:30, "Babylon that I have built" - i:e., made into a well-built city, for it had stood a long while before), as a city that is compact together!' (that realizes the idea of such a city, 1 Chronicles 11:8; 2 Samuel 5:9). The reference is to the junction together of the lower city nod the fortress by the 'walls,' and to the 'palaces,' wherewith he adorned the whole (cf. Psalms 122:7). In all this David sees (here, Psalms 122:3) a token of God's favour toward Jerusalem (2 Samuel 5:9; 2 Samuel 5:12).