Human society is “approaching” its “hall mark”: the “unification of the whole of mankind”

Unification of the whole of mankind is the hall mark of the stage which human society is now approaching. Unity of family, of tribe, of city-state, and nation have been successively attempted and fully established. World unity is the goal towards which a harassed humanity is striving. Nation-building has come to an end… A world, growing to maturity, must abandon this fetish, recognize the oneness and wholeness of human relationships, and establish once for all the machinery that can best incarnate this fundamental principle of its life. (Shoghi Effendi, 11 March 1936, published in ‘The World Order of Bahá'u'lláh: Selected Letters’; The Compilation of Compilations, vol. II, Peace)

God sends His Prophets and Messengers to educate us so that “at the hour of death” we leave with the “utmost purity and sanctity and with absolute detachment”

The Prophets and Messengers of God have been sent down for the sole purpose of guiding mankind to the straight Path of Truth. The purpose underlying Their revelation hath been to educate all men, that they may, at the hour of death, ascend, in the utmost purity and sanctity and with absolute detachment, to the throne of the Most High. (Baha'u'llah, 'Gleanings from the Writings of Baha'u'llah')