Baha'i Scriptures

Inasmuch as for each day and time a particular decree or order is expedient, affairs are therefore entrusted to the House of Justice, so that it may execute that which it deemeth advisable at the time. Those souls who arise to serve the cause sincerely to please God shall be inspired by the invisible inspiration of God. It is incumbent upon all to obey (them, i.e. the House of Justice).

Bahá'u'lláh in Kitab-i-Aqdas (“Most Holy Book”)