Surah 3. Aal-Imran, Ayah 20

According to Razi, this refers to people who have no revealed scripture of their own.

 This refers to the pagans of Arabia before Islam.        

Wajh: whole self. See n. 114 to ii. 112.

The People of the Book may be supposed to know something about the previous religious history of mankind. To them the appeal should be easy and intelligible, as all Religion is one, and it is only being renewed in Islam. But the appeal is also made to the Pagan Arabs, who are unlearned, and who can well be expected to follow the example of one of their own, who received divine enlightenment, and was able to bring new knowledge to them. A great many of both these classes did so. But the few who resisted Allah's grace, and actually threatened and persecuted those who believed, are told that Allah will look after His own.

Note the literary skill in the argument as it proceeds. The mystery of birth faintly suggests that we are coming to the story of Jesus. The exposition of the Book suggests that Islam is the same religion as that of the People of the Book. Next we are told that the People of the Book made their religion one-sided, and through the priesthood of the family of Imran, we are brought to the story of Jesus, who was rejected by a body of the Jews as Muhammad was rejected by a body of both Jews and Christians.