A broken spirit represents a humble attitude. AT: "humility" or "a person who becomes humble" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-metonymy]])
Being humble and sorry for one's sin is spoken of as having a broken and contrite heart. The heart represents the emotions and will. AT: "sorrow and humility" or "a person who is sorry for his sin and humble" (See: [[rc://en/ta/man/translate/figs-metonymy]])
The walls of a city protect the city and the people in it. Possible meanings are 1) "enable us to rebuild the walls of Jerusalem" or 2) "protect Jerusalem and make it strong" (See: [[rc://en/ta/man/translate/figs-metaphor]])