The Baháʼí Faith considers John to have been a prophet of God who like all other prophets was sent to instill the knowledge of God, promote unity among the people of the world, and to show people the correct way to live. There are numerous quotations in the writings of Bahá'u'lláh, founder of the Baháʼí Faith, mentioning John the Baptist. He is regarded by Baháʼís as a lesser Prophet. Bahá'u'lláh claimed that his forerunner, the Báb, was the spiritual return of John the Baptist. In his letter to Pope Pius IX, Bahá'u'lláh wrote: