Joel 2:19

¹⁹ Let Jehovah answer and say to His people, `Lo, I am sending to you the corn, And the new wine, and the oil, And ye have been satisfied with it, And I make you no more a reproach among nations,

Wall, rampart, gates, and bars

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