To be a ‘Doresh Tzion,’ a seeker of Jerusalem, is to stake material, spiritual and national claims to the city
The Talmud derives the obligation of Derishat Tzion, of seeking Zion, from Jeremiah (30:17): “I will restore you to health, and heal your wounds, says the Lord; because [the nations of the world] called you an ‘outcast,’ [scornfully] saying, ‘This is Zion, for whom no one cares.’”

Read full article here