" ...as far back as the First Manifestation, all have at the time of Their appearance suffered grievously."

"Wert thou, for the sake of God, to ponder, though it be but for an hour, upon the things which have occurred in former times and more recently, thou wouldst turn away from the things thou dost possess unto the things which belong unto God, and wouldst become a means for the exaltation of His Word. Hath, from the foundation of the world until the present day, any Light or Revelation shone forth from the dayspring of the will of God which the kindreds of the earth have accepted, and Whose Cause they have acknowledged? Where is it to be found, and what is its name? Since the Seal of the Prophets (Muḥammad)—may all else but Him be His sacrifice—and before Him the Spirit of God (Jesus), as far back as the First Manifestation, all have at the time of Their appearance suffered grievously. Some were held to be possessed, others were called impostors, and were treated in a manner that the pen is ashamed to describe. By God! There befell Them what hath made all created things to sigh, and yet the people are, for the most part, sunk in manifest ignorance! We pray God to assist them to return unto Him, and to repent before the door of His mercy. Potent is He over all things."

-Bahá'u'lláh, Epistle to the Son of the Wolf, p. 92