Say to them (O Mohammed) : 'Who is the Lord of the heavens and the earth?' Say : 'Allah!' Say : 'Have you then chosen as His equals other protectors who can neither help themselves nor hurt themselves?' Say : 'Can he who is blind be equal to he who can see? Or, can darkness be equal to light?' Or, have those whom they have chosen as partners to Allah created anything identical to that which He has created, so that their creation and His creation has seemed alike to them? Say : 'Allah is the Creator of everything and He is the One and He is the Omnipotent over all things!'

(There are several definitions contained in this one verse. It defines the believer as one who can see; who can  assess and evaluate; who can make the right choices and avoid the options which result in error; who can himself walk aright and at the same time point in the correct direction for those who are following behind; in sharp contrast to him is the disbeliever who is devoid of vision on account of which he is plunged in confusion; fumbling his way around through layers of darkness which surround him, bumping into obstacles, tripping over stumps, groping in blind alleys, missing the right exits, taking the wrong turns; misleading himself and those who are following behind; misinterpreting the signals and chasing unattainable goals.

The verse also defines the true Creator as the One who has created all things; Whose marvels are beyond emulation; Whose status beyond reach; Whose throne of authority stands at the zenith of His Creation; Whose Command is obeyed by kings; Whose Kingdom is without frontiers; Whose pervasion is without limits; Whose ascendancy is without any rivals and Whose glory is acknowledged by all! In sharp contrast to Him are the false deities whom the ignorant worship, who can neither help nor hurt; who can neither acknowledge nor respond; who can neither create nor destroy; who can neither move nor see; who can neither frighten nor inspire; who have nothing to offer, no hands to accept with, no power to impose, no will to survive, no faculties to manoeuvre, no reigns to hold, no kingdom to rule and are therefore impotent, unacceptable and unproductive!)