The Epistle to the Son of the Wolf is the last major work of Bahá'u'lláh, founder of the Bahá'í Faith, before his death in 1892. It is a letter written to a Muslim cleric, a violent opponent of the Bahá'ís who, along with his father (called by Bahá'u'lláh "the wolf"), also a Muslim cleric, had put to death a number of Bahá'ís. Bahá'u'lláh calls for him to repent for his and his father's wrongdoings and to investigate the faith.