“The companions of God,” Bahá’u’lláh Himself has declared, “are, in this day, the lump that must leaven the peoples of the world. They must show forth such trustworthiness, such truthfulness and perseverance, such deeds and character that all mankind may profit by their example.”

"This rectitude of conduct, with its implications of justice, equity, truthfulness, honesty, fair-mindedness, reliability, and trustworthiness, must distinguish every phase of the life of the Bahá’í community. “The companions of God,” Bahá’u’lláh Himself has declared, “are, in this day, the lump that must leaven the peoples of the world. They must show forth such trustworthiness, such truthfulness and perseverance, such deeds and character that all mankind may profit by their example.” “I swear by Him Who is the Most Great Ocean!” He again affirms, “Within the very breath of such souls as are pure and sanctified far-reaching potentialities are hidden. So great are these potentialities that they exercise their influence upon all created things.” “He is the true servant of God,” He, in another passage has written, “who, in this day, were he to pass through cities of silver and gold, would not deign to look upon them, and whose heart would remain pure and undefiled from whatever things can be seen in this world, be they its goods or its treasures. I swear by the Sun of Truth! The breath of such a man is endowed with potency, and his words with attraction.” “By Him Who shineth above the Dayspring of sanctity!” He, still more emphatically, has revealed, “If the whole earth were to be converted into silver and gold, no man who can be said to have truly ascended into the heaven of faith and certitude would deign to regard it, much less to seize and keep it.… They who dwell within the Tabernacle of God, and are established upon the seats of everlasting glory, will refuse, though they be dying of hunger, to stretch their hands, and seize unlawfully the property of their neighbor, however vile and worthless he may be. The purpose of the one true God in manifesting Himself is to summon all mankind to truthfulness and sincerity, to piety and trustworthiness, to resignation and submissiveness to the will of God, to forbearance and kindliness, to uprightness and wisdom. His object is to array every man with the mantle of a saintly character, and to adorn him with the ornament of holy and goodly deeds.” 

~ Shoghi Effendi quoting Bahá'u'lláh

(The Advent of Divine Justice)