Prophethood cannot be earned through one's own efforts or one's own merit; it is a special grace which Allah bestows on whomsoever He likes. But the Jews were so envious and malicious that they denied the Holy Prophet ﷺ and the Holy Qur'an out of sheer spite. In doing so, they were questioning the will of Allah Himself. Thus, they earned divine wrath in two ways - firstly, for denying a true prophet; and secondly؛ for their envy and malice.
The Holy Qur'an says that the Jews will have to undergo a punishment which would involve not only pain, but also disgrace and abasement. The latter condition has been added to suggest that this kind of punishment is peculiar to the infidels, and is not meant for a true Muslim at all, for a Muslim, no matter how great his sins are, will be punished for the purpose of being purified, not for being disgraced.
The next verse reports what the Jews used to say with regard to the Holy Qur'an, which clearly shows their envy and malice as well as their infidelity (Kufr کفر).