Bahá’í Sacred Writings, ‘Abdu’l-Bahá, #491

The Supreme House of Justice should be elected according to the system followed in the election of the parliaments of Europe. And when the countries would be guided, the Houses of Justice of the various countries would elect the Supreme House of Justice.

At whatever time all the beloved of God in each country appoint their delegates, and these in turn elect their representatives, and these representatives elect a body, that body shall be regarded as the Supreme House of Justice.

The establishment of that House is not dependent upon the conversion of all the nations of the world. For example, if conditions were favourable and no disturbances would be caused, the friends in Persia would elect their representatives, and likewise the friends in America, in India, and other areas would also elect their representatives, and these would elect a House of Justice. That House of Justice would be the Supreme House of Justice. That is all.