Allah says: O Muhammad, say,

﴿يَـأَهْلَ الْكِتَـبِ لَسْتُمْ عَلَى شَىْءٍ﴾

(O People of the Scripture! You have nothing...) meaning no real religion until you adhere to and implement the Tawrah and the Injil. That is, until you believe in all the Books that you have that Allah revealed to the Prophets. These Books command following Muhammad and believing in his prophecy, all the while adhering to his Law. Before, we explained Allah's statement,

﴿وَلَيَزِيدَنَّ كَثِيراً مِّنْهُم مَّآ أُنزِلَ إِلَيْكَ مِن رَّبِّكَ طُغْيَـناً وَكُفْراً﴾

(Verily, the revelation that has come to you from your Lord makes many of them increase in rebellion and disbelief.)

﴿فَلاَ تَأْسَ عَلَى الْقَوْمِ الْكَـفِرِينَ﴾

(So do not grieve for the people who disbelieve), Do not be sad or taken aback by their disbelief. Allah said next,

﴿إِنَّ الَّذِينَ ءَامَنُواْ﴾

(Surely, those who believe) referring to Muslims,

﴿وَالَّذِينَ هَادُواْ﴾

(those who are the Jews) who were entrusted with the Tawrah,

﴿وَالصَّـبِئُونَ﴾

(and the Sabians. ..) a sect from the Christians and Magians who did not follow any particular religion, as Mujahid stated. As for the Christians, they are known and were entrusted with the Injil. The meaning here is that if each of these groups believed in Allah and the Hereafter, which is the Day of Judgement and Reckoning, and performed good actions, which to be so, must conform to Muhammad's Law, after Muhammad was sent to all mankind and the Jinns. If any of these groups held these beliefs, then they shall have no fear of what will come or sadness regarding what they lost, nor will grief ever affect them. We discussed a similar Ayah before in Surat Al-Baqarah ﴿2:62﴾.

﴿لَقَدْ أَخَذْنَا مِيثَاقَ بَنِى إِسْرَءِيلَ وَأَرْسَلْنَآ إِلَيْهِمْ رُسُلاً كُلَّمَا جَآءَهُمْ رَسُولٌ بِمَا لاَ تَهْوَى أَنفُسُهُمْ فَرِيقاً كَذَّبُواْ وَفَرِيقاً يَقْتُلُونَ - وَحَسِبُواْ أَلاَّ تَكُونَ فِتْنَةٌ فَعَمُواْ وَصَمُّواْ ثُمَّ تَابَ اللَّهُ عَلَيْهِمْ ثُمَّ عَمُواْ وَصَمُّواْ كَثِيرٌ مِّنْهُمْ وَاللَّهُ بَصِيرٌ بِمَا يَعْمَلُونَ ﴾

(70. Verily, We took the covenant of the Children of Israel and sent Messengers to them. Whenever there came to them a Messenger with what they themselves desired not, a group of them they called liars, and others among them they killed.) (71. They thought there will be no Fitnah (trial or punishment), so they became blind and deaf; after that Allah turned to them (with forgiveness); yet again many of them became blind and deaf. And Allah is the All-Seer of what they do.) Allah reminds that He took the covenant and pledges from the Children of Israel to hear and obey Him and His Messenger. They broke these pledges and covenants and followed their lusts and desires instead of the law, and whichever part of the law they agreed with, they took it. Otherwise, they abandoned it, if it did not conform to their desires. This is why Allah said,

﴿كُلَّمَا جَآءَهُمْ رَسُولٌ بِمَا لاَ تَهْوَى أَنفُسُهُمْ فَرِيقاً كَذَّبُواْ وَفَرِيقاً يَقْتُلُونَوَحَسِبُواْ أَلاَّ تَكُونَ فِتْنَةٌ فَعَمُواْ وَصَمُّواْ﴾

(Whenever there came to them a Messenger with what they themselves desired not - a group of them they called liars, and others among them they killed. They thought there will be no Fitnah (trial or punishment) so they became blind and deaf.) thinking that they would suffer no repercussions for of the evil that they committed. Consequently, they were blinded from the truth and became deaf, incapable of hearing the truth. For these reasons they were unable to be guided by it. Allah forgave that, then,

﴿وَصَمُّواْ ثُمَّ﴾

(yet they became blind and deaf) again,

﴿كَثِيرٌ مِّنْهُمْ وَاللَّهُ بَصِيرٌ بِمَا يَعْمَلُونَ﴾

(many of them, and Allah is the All-Seer of what they do.) He has perfect knowledge of what they do and whomever among them deserves the guidance and whomever deserves misguidance.

﴿لَقَدْ كَفَرَ الَّذِينَ قَالُواْ إِنَّ اللَّهَ هُوَ الْمَسِيحُ ابْنُ مَرْيَمَ وَقَالَ الْمَسِيحُ يَابَنِى إِسْرَءِيلَ اعْبُدُواْ اللَّهَ رَبُّى وَرَبَّكُمْ إِنَّهُ مَن يُشْرِكْ بِاللَّهِ فَقَدْ حَرَّمَ اللَّهُ عَلَيهِ الْجَنَّةَ وَمَأْوَاهُ النَّارُ وَمَا لِلظَّـلِمِينَ مِنْ أَنصَارٍ - لَّقَدْ كَفَرَ الَّذِينَ قَالُواْ إِنَّ اللَّهَ ثَـلِثُ ثَلَـثَةٍ وَمَا مِنْ إِلَـهٍ إِلاَّ إِلَـهٌ وَحِدٌ وَإِن لَّمْ يَنتَهُواْ عَمَّا يَقُولُونَ لَيَمَسَّنَّ الَّذِينَ كَفَرُواْ مِنْهُمْ عَذَابٌ أَلِيمٌ - أَفَلاَ يَتُوبُونَ إِلَى اللَّهِ وَيَسْتَغْفِرُونَهُ وَاللَّهُ غَفُورٌ رَّحِيمٌ - مَّا الْمَسِيحُ ابْنُ مَرْيَمَ إِلاَّ رَسُولٌ قَدْ خَلَتْ مِن قَبْلِهِ الرُّسُلُ وَأُمُّهُ صِدِّيقَةٌ كَانَا يَأْكُلاَنِ الطَّعَامَ انْظُرْ كَيْفَ نُبَيِّنُ لَهُمُ الاٌّيَـتِ ثُمَّ انْظُرْ أَنَّى يُؤْفَكُونَ ﴾

(72. Surely, they have disbelieved who say: "Allah is the Messiah ﴿`Isa﴾, son of Maryam.'' But the Messiah said: "O Children of Israel! worship Allah, my Lord and your Lord.'' Verily, whosoever sets up partners (in worship) with Allah, then Allah has forbidden Paradise for him, and the Fire will be his abode. And for the wrongdoers there are no helpers.) (73. Surely, they have disbelieved who say: "Allah is the third of three.'' And there is no god but One God (Allah). And if they cease not from what they say, verily, a painful torment will befall on the disbelievers among them.) (74. Will they not repent to Allah and ask His forgiveness For Allah is Oft-Forgiving, Most Merciful.) (75. The Messiah ﴿`Isa﴾, son of Maryam, was no more than a Messenger; many were the Messengers that passed away before him. His mother ﴿Maryam﴾ was a Siddiqah. They both used to eat food. Look how We make the Ayat clear to them; yet look how they are deluded away (from the truth).)