Allah delegated his Messenger with commands to guide us to the true religion, Al-Islam; the laws of which are clear, evident and above all other religions, while the Idolaters abhor this fact.
True religion is the light, like the light of the sun and the moon. However, there are always going to be those who want to keep the world in darkness, especially the ignorant masses. These are the people who want the material things more than they want the spiritual development.
The Abrahamic faiths, or the heavenly religions, i.e. Judaism, Christianity, and Islam are linked together scripturally. They all contain the truth of G’d as the Creator of life and death, reward and punishment and resurrection, heaven and hell.
Al-Islam, is the correction and completion of all previous scripture. It is the true reality which is open and clear. G’d protects his final revelation, The Holy Quran, from corruption and it contains the guidance, wisdom and logic that man needs to become firm in his faith.