2091 But the path of duty before Allah's Messenger is clear. He is sent with the Revelation (the Qur'an) for three express purposes: (1) that he should bring about unity among the jarring sects, for the Gospel of Unit)', while preaching the One True God, leads also to the unity of mankind; (2) that the revelation should be a guide to right conduct; and (3) that it should show the path of repentance and salvation, and thus be the highest mercy to erring sinners.