Contrast between believers and transgressors among the People of the Book

كُنتُمْ خَيْرَ أُمَّةٍ أُخْرِجَتْ لِلنَّاسِ تَأْمُرُونَ بِٱلْمَعْرُوفِ وَتَنْهَوْنَ عَنِ ٱلْمُنكَرِ وَتُؤْمِنُونَ بِٱللَّهِ ۗ وَلَوْ ءَامَنَ أَهْلُ ٱلْكِتَـٰبِ لَكَانَ خَيْرًا لَّهُم ۚ مِّنْهُمُ ٱلْمُؤْمِنُونَ وَأَكْثَرُهُمُ ٱلْفَـٰسِقُونَ

You are the best nation produced [as an example] for mankind. You enjoin what is right and forbid what is wrong and believe in Allāh. If only the People of the Scripture had believed, it would have been better for them. Among them are believers, but most of them are defiantly disobedient.