Surat Al Baqarah (100-101)

{ أَوَكُلَّمَا عَاهَدُواْ عَهْداً نَّبَذَهُ فَرِيقٌ مِّنْهُم بَلْ أَكْثَرُهُمْ لاَ يُؤْمِنُونَ } [البقرة:  100]

100- How come whenever the Jews give a promise, a group of them breaks it and refuses the covenant! That was their habit; even they had broken the promise which they gave to the Prophet (peace be upon him) when he first came to Medina. Most of them do not believe in the Prophet who was sent to them and to all people, who is written in their Scriptures while they have been commanded to believe in him and support him.

{ وَلَمَّا جَاءهُمْ رَسُولٌ مِّنْ عِندِ اللّهِ مُصَدِّقٌ لِّمَا مَعَهُمْ نَبَذَ فَرِيقٌ مِّنَ الَّذِينَ أُوتُواْ الْكِتَابَ كِتَابَ اللّهِ وَرَاء ظُهُورِهِمْ كَأَنَّهُمْ لاَ يَعْلَمُونَ } [البقرة:  101]

101- When the anticipated Prophet was sent to them, confirming what was revealed to them in the previous Scriptures, a group of them threw away the Book of Allah behind their backs because it contained the news of the advent of Muhammad as if they did not know.

They had left the Book and resorted to magic to learn; they left what may benefit them to things that do not benefit them, but rather, they harm others as will be later explained.