Wall, rampart, gates, and bars

In Lamentations 2:8-9, the 'wall,' 'rampart,' 'gates,' and 'bars' signify doctrines.

Lamentations 2:18

¹⁸ Their heart cried to the Lord: wall of the daughter of Zion, let tears run down like a river day and night; Give yourself no respite; don't let the apple of your eye cease.