يُرِيدُونَ لِيُطْفِوُوا نُورَ اللَّهِ بِأَفْوَاهِهِمْThey intend to put out the Light of Allah with their mouths.indicating that the disbelievers will try to contradict the truth with falsehood. Their attempts are similar to one's attempt to extinguish the sun with his mouth, which is impossible. Likewise is the case of their attempt to extinguish truth.So Allah said,وَاللَّهُ مُتِمُّ نُورِهِ وَلَوْ كَرِهَ الْكَافِرُونَهُوَ الَّذِي أَرْسَلَ رَسُولَهُ بِالْهُدَى وَدِينِ الْحَقِّلِيُظْهِرَهُ عَلَى الدِّينِ كُلِّهِ وَلَوْ كَرِهَ الْمُشْرِكُونَ