إِنَّ الَّذِينَ يَكْتُمُونَ مَا أَنزَلْنَا مِنَ الْبَيِّنَاتِ وَالْهُدَىٰ مِن بَعْدِ مَا بَيَّنَّاهُ لِلنَّاسِ فِي الْكِتَابِ ۙ أُولَٰئِكَ يَلْعَنُهُمُ اللَّهُ وَيَلْعَنُهُمُ اللَّاعِنُونَ (159)
(2:159) Indeed Allah curses, and the cursers, too, curse those who conceal the clear teachings and guidance We have sent down, after We have made these plain in the Book for the guidance of all mankind. *160
*160). The biggest failure of the Jews was that they kept the teachings contained in the Book of God confined to a limited class of people, the rabbis and professional theologians, instead of spreading them. They did not allow this knowledge to filter through even to the Jewish masses let alone the non-Jewish peoples of the world. Later, when errors and corruptions spread among them owing to widespread ignorance the Jewsish theologians made no serious effort to root them out. Moreover, in order to maintain their hold on the Jewish masses they lent their tacit approval to every corrupting deviation from the true faith that gained currency.
The Muslims are being admonished to refrain from this kind of behaviour. The nation which has been charged with the guidance of the entire world is duty-bound to do its utmost to radiate true guidance, rather than keep it under lock and key as a miser hoards his money.