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Surah 5. Al-Ma'ida
Ayah 78 - 81
78لُعِنَ ٱلَّذِينَ كَفَرُوا۟ مِنۢ بَنِىٓ إِسْرَٰٓءِيلَ عَلَىٰ لِسَانِ دَاوُۥدَ وَعِيسَى ٱبْنِ مَرْيَمَ ۚ ذَٰلِكَ بِمَا عَصَوا۟ وَّكَانُوا۟ يَعْتَدُونَ
79كَانُوا۟ لَا يَتَنَاهَوْنَ عَن مُّنكَرٍ فَعَلُوهُ ۚ لَبِئْسَ مَا كَانُوا۟ يَفْعَلُونَ
80تَرَىٰ كَثِيرًا مِّنْهُمْ يَتَوَلَّوْنَ ٱلَّذِينَ كَفَرُوا۟ ۚ لَبِئْسَ مَا قَدَّمَتْ لَهُمْ أَنفُسُهُمْ أَن سَخِطَ ٱللَّهُ عَلَيْهِمْ وَفِى ٱلْعَذَابِ هُمْ خَـٰلِدُونَ
81وَلَوْ كَانُوا۟ يُؤْمِنُونَ بِٱللَّهِ وَٱلنَّبِىِّ وَمَآ أُنزِلَ إِلَيْهِ مَا ٱتَّخَذُوهُمْ أَوْلِيَآءَ وَلَـٰكِنَّ كَثِيرًا مِّنْهُمْ فَـٰسِقُونَ
[78-81] Those who adopted the way of disbelief from among the children of Israel were cursed by the tongue of David and of Jesus. Mary's son, because they had grown rebellious and become transgressors: they would not forbid one another to do the wrong deeds they committed;102 evil was the way they had adopted. Today you see many of them who take the side of the disbelievers (against the Believers). Indeed it is an evil end to which their souls have prompted them: for they have incurred the wrath of Allah and they are going to suffer eternal torment. Had they believed in Allah and the Prophet and in what was revealed to him, they would never have made friends with the disbelievers”103 (against the Believers), but many of them have become disobedient to Allah.
102The corruption of the children of Israel took place according to the universal process. At first some individuals of a community become corrupt, and if the collective conscience of the community is alive, the public opinion keeps them suppressed, and the community, as a whole, is saved from corruption. But, on the other hand, if the community connives at their evil ways, and leaves them free to do as they like, by and by, that corruption which was at first confined only to some individuals, spreads in the whole community. The same thing happened in the case of the children of Israel.
As to the curse by the tongue of the Prophets David and Jesus, please refer to Psalms 10 and 50 and Matthew 23.
103If the Jews had been sincere believers in God, Prophethood and Revelation, they would naturally have taken the side of the Muslims, who were believers in these teachings. But the Jews were a strange sort of believers in the Book: they sided with the mushriks against the Believers in the battle between the Unity of God and shirk Moreover, they professed to believe in Prophethood, but took the side of those who did not believe in it. Still they shame-facedly declared that they were believers in God, Prophets and the Books.