The whole duty of man in this Day is to attain that share of the flood of grace which God poureth forth for him. Let none, therefore, consider the largeness or smallness of the receptacle. The portion of some might lie in the palm of a man's hand, the portion of others might fill a cup, and of others even a gallon-measure.

Bahá’u’lláh, Gleanings from the Writings of Bahá’u’lláh, p. 8

It is the duty of the individual friends to come to know one another and finds out who are the persons best fitted to become members of that body. This is a slow process but surely the best one and gives the greatest amount of freedom of choice to the electors. It is the duty of the friends individually to become more intelligent voters and vote only after studying the situation conscientiously.

Shoghi Effendi, Lights of Guidance, p. 19

The primary duty of the friends everywhere in the world is to let the people know such a Revelation is in existence; their next duty is to teach it.

Shoghi Effendi, Guidance for Bahá’í Radio, p. i

As you no doubt know, the duty of making a will is enjoined upon all Bahá’ís, and in such a will a believer is free to bequeath his or her property in whatever way he or she  wishes.

The Universal House of Justice, Messages 1963 to 1986, p. 318-319

We all know that the Cause of Bahá’u’lláh is the world's only salvation, and that our duty is to actively teach receptive souls, and to do our utmost to help in the consolidation of the institutions of the Faith. Only in this way can we contribute our share of servitude at His Threshold, and we should then leave the rest to Him.

Universal House of Justice, Lights of Guidance, p. 129