April 15

In every instance they [the Manifestations of God] have voiced an utterance that would conform to the requirements of the occasion, and have ascribed all these declarations to Themselves, declarations ranging from the realm of Divine Revelation to the realm of creation, and from the domain of Divinity even unto the domain of earthly existence. Thus it is that whatsoever be their utterance, whether it pertain to the realm of Divinity, Lordship, Prophethood, Messengership, Guardianship, Apostleship, or Servitude, all is true, beyond the shadow of a doubt. 
(Baha'u'llah, ‘Gleanings from the Writings of Baha'u'llah’)