مِن قَبْلُAforetime,meaning, before the Qur'an was revealed.هُدًى لِّلنَّاسِAs a guidance to mankind, (in their time).وَأَنزَلَ الْفُرْقَانَAnd He sent down the criterion,which is the distinction between misguidance, falsehood and deviation on one hand, and guidance, truth and piety on the other hand. This is because of the indications, signs, plain evidences and clear proofs that it contains, and because of its explanations, clarifications, etc.Allah's statement,إِنَّ الَّذِينَ كَفَرُواْ بِأيَاتِ اللّهِTruly, those who disbelieve in the Ayat of Allah,means they denied, refused and unjustly rejected them. لَهُمْ عَذَابٌ شَدِيدٌFor them there is a severe torment, (on the Day of Resurrection).وَاللّهُ عَزِيزٌAnd Allah is All-Mighty,meaning, His grandeur is invincible and His sovereignty is infinite,ذُو انتِقَامٍAll-Able of Retribution.from those who reject His Ayat and defy His honorable Messengers and great Prophets