It says...
It says: “They intend that they extinguish the Light of Allah with their mouths and Allah refuses but to perfect His Light…” Inspite of their wish, Allah intends to spread this Divine Light and to complete it more and more, so that it covers throughout the world and in a manner that all the people of the world enjoy it, although the disbelievers do not like it.
The verse continues saying: “…though the infidels detest it.” There is no meaning seemed more expressive than this to illustrate the degradation and contempt of their attempts. In fact, there will be no result for the efforts of a feable creature before the endless Will and infinite Power of Allah other than this. For extinguishing a small light, people used to usually blow with their mouths, while a puff of mouth has no effect in extinguishing strong lights.
In order to state the weakness of their ability and to break their personality, the Qur’ān has applied “…with their mouths…” which is of no avail for the strong lights to be extinguished. The purpose is that these miserable people intend to extinguish the light of Allah with the blow of their mouth, like a person who tries to extinguish the sun with a puff.
In this way, the Qur’ān has completed the content of the previous verse indicating that the efforts of the opponents of Islam result nothing for them.
It explicitly says: “He it is Who sent His Messenger with guidance and the religion of Truth, that He may prevail it over all religions, though the polytheists may detest it.” The purpose of ‘ guidance ’ , mentioned in the verse, is the clear reasoning and manifest evidences which exist in the religion of Islam; and the purpose of the phrase ‘ religion of Truth ’ is the same religion of Islam whose both principles and positive laws are right and, in general, its history, evidences, proofs, consequences and concepts are totally right, too.
Thus, no doubt, the religion whose both contents and documents, reasoning, and history are clear, should finally overcome all former creeds.