The transmission of divine guidance for humanity through prophets, beginning with Adam and culminating in the mission of Muhammad, “the seal of prophets,” according to the Quran. Since the message is given to guide human affairs, intellectual understanding and practical implementation through reliable example are also necessary. Prophets serve as both messengers and models. Recent Muslim thinkers have expressed the need to free interpretation of the Quran from the narrow literalism and verse-by-verse, atomistic methods of earlier exegetes, focusing instead on the universal relevancy of revelation in a world of rapid and radical change. Throughout Muslim history, debates have raged over the relative value of knowledge received from divine revelation and knowledge arrived at through independent reasoning. Acceptance of the Quran as revelation of God's will means that it is unchallengeable and without equal. Orthodox Islam, in particular, opposes the idea that all things can be known by human reason alone. Thus humanity requires revelation for clear information about the mysteries of existence, which inform us of the relationship between the absolute and the manifest. Revelation is considered a unique and necessary kind of knowledge.