What is the "Universal House of Justice" doing?

“From the beginning of this Dispensation the most urgent summons of the Word of God, voiced successively by the Báb and Bahá’u’lláh, has been to teach the Cause. ‘Abdu’l-Bahá, in His own words, ‘spent His days and nights in promoting the Cause and urging the peoples to service.’ Shoghi Effendi, discharging the sacred mission laid upon him, raised the Administrative Order of the Faith, already enshrined within the Sacred Writings, and forged it into a teaching instrument to accomplish through a succession of plans, national, international, and global, the entire Divine Plan of ‘Abdu’l-Bahá, and he clearly foresaw . . . a series of plans to be launched by the Universal House of Justice, extending over ‘successive epochs of both the Formative and Golden Ages of the Faith.’”

—The Universal House of Justice, Wellspring of Guidance 22–23