Criteria for Certitude

To be able to recognize Baha'u'llah one needs to see with the "eye of God". In the Kitab-i-Iqan Bahá'u'lláh describes the conditions required of a person to be able to see things with the "eye of God" (the way God sees things — with clarity, insight, wisdom, penetrating vision, justice, certitude, etc).

"If it be your wish, O people, to know God and to discover the greatness of His might, look, then, upon Me with Mine own eyes, and not with the eyes of anyone besides Me. Ye will, otherwise, be never capable of recognizing Me, though ye ponder My Cause as long as My Kingdom endureth, and meditate upon all created things throughout the eternity of God, the Sovereign Lord of all…"

— Bahá'u'lláh

To recognize Baha'u'llah, one needs to see with the "eye of God". In Part 2 are described the conditions required of a person to be able to see things with the "eye of God" and hence reach absolute certitude regarding the truth of Baha'u'llah and His Cause.