Page 60
wa-ʾinna minhum la-farīqan yalwūna ʾalsinatahum bi-l-kitābi li-taḥsabūhu mina l-kitābi wa-mā huwa mina l-kitābi wa-yaqūlūna huwa min ʿindi llāhi wa-mā huwa min ʿindi llāhi wa-yaqūlūna ʿalā llāhi l-kadhiba wa-hum yaʿlamūna
There is a group of them who alter their voice while reading out a text [that they have themselves authored], so that you may suppose it to be from the Book, though it is not from the Book, and they say, ‘It is from Allah,’ though it is not from Allah, and they attribute lies to Allah, and they know [it].
— Ali Quli Qarai
Surah 'Ali-Imran, Verse 78
78. "And verily among them is a group who twist their tongues with the Book that you may suppose it to be from the Book, but it is not from the Book; and they say: 'It is from Allah', while it is not from Allah; and they speak falsehood against Allah and they know (it)."
Occasion of Revelation
This verse was also revealed about a group of the Jewish scholars who used to write with their own hands some things against what was found in the Torah about the characteristics of the Messenger of Islam (S) and said that it was from the Lord. They perverted the facts of the Torah with their speech. In this verse, again, the words are about some other wrong actions of a group of scholars of the People of the Book. It says:
They did not suffice to that action either, but they explicitly said that it was from the side of the Lord:
Then, the Qur'an emphasizes that this action was not done because of their mistake, but they knowingly told a lie about Allah
By the way, from this verse and its previous verses, the great danger of the deluded scholars for a community and a nation is made clear.