Al-Ma'idah 5:66

وَلَوْ أَنَّهُمْ أَقَامُوا۟ ٱلتَّوْرَىٰةَ وَٱلْإِنجِيلَ وَمَآ أُنزِلَ إِلَيْهِم مِّن رَّبِّهِمْ لَأَكَلُوا۟ مِن فَوْقِهِمْ وَمِن تَحْتِ أَرْجُلِهِم ۚ مِّنْهُمْ أُمَّةٌۭ مُّقْتَصِدَةٌۭ ۖ وَكَثِيرٌۭ مِّنْهُمْ سَآءَ مَا يَعْمَلُونَ

If only they had stood fast by the Law, the Gospel, and all the revelation that was sent to them from their Lord, they would have enjoyed happiness from every side. There is from among them a party on the right course: but many of them follow a course that is evil.