When He [Baha’u’llah] had established the foundations [of
the religion of the Báb] in Tihrán He hastened to Mázindarán, where He
displayed in assemblies, meetings, conferences, inns, mosques, and colleges a
mighty power of utterance and exposition. Whoever beheld His open brow or heard
His vivid eulogies perceived Him with the eye of actual vision to be a patent
demonstration, a latent magnetic force, and a pervading influence. A great
number both of rich and poor and of erudite doctors were attracted by His
preaching and washed their hands of heart and life, being so enkindled that
they laid down their lives under the sword dancing [with joy].
(‘Abdu’l-Baha,
‘A Traveler’s Narrative’)