The Bahá'í Faith is a belief system grounded in the conviction that all people on Earth are part of a single human family, and that the unity of humanity is a fundamental prerequisite for the peace and progress of humankind. Founded in the 19th century in Persia by Bahá'u'lláh, a prophet and founder, the Bahá'í Faith has since spread worldwide. Emphasizing the oneness of all religions and the belief in a single God revealed through a series of prophets and revelations, including Abraham, Moses, Buddha, Krishna, Jesus Christ, Muhammad, and Bahá'u'lláh himself, the Bahá'í Faith also advocates for the equality of men and women, the elimination of prejudice, and the promotion of education. In a world marked by conflicts, discrimination, and divisions, the Bahá'í Faith presents an alternative vision based on unity, tolerance, and collaboration. Through its universal message and practices such as regular prayers and community service, the Bahá'í Faith has brought together people of different cultures, nations, and backgrounds, contributing to positive societal changes. This book, "The Bahá'í Faith: A Universal Belief for a United Humanity," aims to familiarize a broader audience with the ideas and practices of the Bahá'í Faith and underscore the importance of unity and collaboration in an increasingly globalized world. It extends an invitation to all individuals, regardless of their background or beliefs, to join the Bahá'í Faith and work together towards a better future for humanity.