بِئْسَمَا ٱشْتَرَوْا۟ بِهِۦٓ أَنفُسَهُمْ أَن يَكْفُرُوا۟ بِمَآ أَنزَلَ ٱللَّهُ بَغْيًا أَن يُنَزِّلَ ٱللَّهُ مِن فَضْلِهِۦ عَلَىٰ مَن يَشَآءُ مِنْ عِبَادِهِۦ ۖ فَبَآءُو بِغَضَبٍ عَلَىٰ غَضَبٍ ۚ وَلِلْكَـٰفِرِينَ عَذَابٌ مُّهِينٌ Qur’an Al-Baqara (2:90)Bisam a ishtaraw bihi anfusahum an yakfuroo bim a anzala All a hu baghyan an yunazzila All a hu min fa d lihi AAal a man yash a o min AAib a dihi fab a oo bigha d abin AAal a gha d abin walilk a fireena AAa tha bun muheen un
I.e., out of envy that God should bestow revelation upon anyone but a descendant of Israel - in this particular instance, upon the Arabian Prophet, Muhammad.
Racial arrogance made the Jews averse to the reception of Truth when it came through a servant of God, not of their own race. Again the lesson is wider. Is that averseness unknown in our own times, and among other races? Yet how can a race or a people set bounds to God's choice? God is the Creater and Cherisher of all races and all worlds.