فَوَيْلٌ لِّلَّذِينَ يَكْتُبُونَ الْكِتَابَ بِأَيْدِيهِمْ ثُمَّ يَقُولُونَ هَذَا مِنْ عِندِ اللَّهِ لِيَشْتَرُوا بِهِ ثَمَنًا قَلِيلًا فَوَيْلٌ لَّهُم مِّمَّا كَتَبَتْ أَيْدِيهِمْ وَوَيْلٌ لَّهُم مِّمَّا يَكْسِبُونَ
So woe to them who write the Book with their hands and then say, ‘This is from Allah,’ that they may sell it for a paltry gain. So woe to them for what their hands have written, and woe to them for what they earn!
Agha Ali Puya Commentary
Commentary on Quran 2:79
[Pooya/Ali Commentary 2:79] In order to confuse the people so that they could not see in the Holy Prophet the qualities mentioned in their books and rightly identify him as the promised prophet, they had made alterations in the holy scriptures. By corrupting the books they had corrupted themselves.