That's what most Pakistanis have been taught. But Judaism is religion PLUS race. These days, Jews have allowed some conversions (but with severe restrictions), because they don't want to be considered racist. But again, a Jew is Jew by birth. He remains Jew even if he becomes an atheist.
Judaism is MORE than just a religion.
Judaism is not a race but am ETHNICITY. There is a major difference between the two.
Jews can be black, like the Ethiopian Jews, or white like the Majority Ashkenazi Jews. They don't belong to a certain race but to one and the same Ethnicity. Pretty much like Arabs and Hispanics.