The evolutionary nature of religion
Baha'is view religion as a progressive, evolutionary process which needs to be updated as humanity evolves mentally, socially, and spiritually. Every so often a new Prophet is sent to humanity to update religion to the current needs of humanity. These Prophets bring essentially the same spiritual message to humankind; in a form that meets the needs of the people of Their time. Baha'is believe that Baha'u'llah has brought an updated message for humanity today.
"There is no distinction whatsoever among the Bearers of My Message. They all have but one purpose; their secret is the same secret. To prefer one in honor to another, to exalt certain ones above the rest, is in no wise to be permitted. Every true Prophet hath regarded His Message as fundamentally the same as the Revelation of every other Prophet gone before Him... The measure of the revelation of the Prophets of God in this world, however, must differ. Each and every one of them hath been the Bearer of a distinct Message, and hath been commissioned to reveal Himself through specific acts. It is for this reason that they appear to vary in their greatness... It is clear and evident, therefore, that any apparent variation in the intensity of their light is not inherent in the light itself, but should rather be attributed to the varying receptivity of an ever-changing world. Every Prophet Whom the Almighty and Peerless Creator hath purposed to send to the peoples of the earth hath been entrusted with a Message, and charged to act in a manner that would best meet the requirements of the age in which He appeared."
Gleanings from the Writings of Baha'u'llah, pp. 78-9
If you believe you are a Baha'i,