إِلاَّ مَنِ ارْتَضَى مِن رَّسُولٍThe All-Knower of the Unseen, and He reveals to none His Unseen. Except to a Messenger.This is similar to Allah's statement,وَلَا يُحِيطُونَ بِشَيْءٍ مِّنْ عِلْمِهِ إِلاَّ بِمَا شَأءَAnd they will never compass any thing of His knowledge except that which He wills. (2:255)Similarly, Allah says here that He knows the unseen and the seen and that no one of His creation can attain any of His knowledge except that which Allah allows him to have. Thus, Allah says,عَالِمُ الْغَيْبِ فَلَا يُظْهِرُ عَلَى غَيْبِهِ أَحَدًاإِلاَّ مَنِ ارْتَضَى مِن رَّسُولٍThe All-Knower of the Unseen, and He reveals to none His Unseen. Except to a Messenger whom He has chosen, This includes the angelic Messenger and the human Messenger.Then Allah says,فَإِنَّهُ يَسْلُكُ مِن بَيْنِ يَدَيْهِ وَمِنْ خَلْفِهِ رَصَدًاand then He makes a band of watching guards to march before him and behind him.meaning, He particularly gives him additional guardian angels who protect him by the command of Allah and they accompany him with that which is with him of Allah's revelation.Thus, Allah says,لِيَعْلَمَ أَن قَدْ أَبْلَغُوا رِسَالَاتِ رَبِّهِمْ وَأَحَاطَ بِمَا لَدَيْهِمْ وَأَحْصَى كُلَّ شَيْءٍ عَدَدًا