Man is in need of innumerable things to sustain his life, for example, light, water, air, food, minerals, etc. Each of these elements require the combined and concerted actions of universal forces to come into existence. Who else except the one God is capable of bringing about such a big event? When the Creator and Organiser of all these things is the One God, then how could it be reasonable for people to worship any entity other than Him? It is a peculiar historical experience that those who accord a position of greatness to things other than God are intractable when it comes to re-assigning that greatness to God, even though the call for this may be made by a prophet in person. The reason for this is that people find it easy to continue with previously accepted notions; whereas accepting a new prophet would mean putting one’s faith in something different. For the individual to acquire this type of ‘iman’ (faith), he must activate his own thinking powers; he should discover the Truth through his own insight. Undoubtedly, this has always been the most difficult task for a man to perform.