Baha'u'llah was the founder of the Baha'i Faith, a religion that emerged in the 19th century. Born in 1817 in Persia (modern-day Iran), he claimed to be the latest in a line of prophets that includes figures like Jesus and Muhammad. His teachings emphasize the unity of all people and religions, advocating for peace, justice, and equality. In 1863, Baha'u'llah publicly declared his mission while exiled in Baghdad. He wrote numerous texts, including the Kitáb-i-Aqdas, which outlines the principles of the Baha'i Faith. Baha'u'llah passed away in 1892, leaving a legacy that continues to inspire millions worldwide.