It is a complex question with a dedicated Wikipedia article https://en.wikipedia.org/wiki/Who_is_a_Jew%3F https://en.wikipedia.org/wiki/Who_is_a_Jew%3F There

It is a complex question with a dedicated Wikipedia article https://en.wikipedia.org/wiki/Who_is_a_Jew%3F https://en.wikipedia.org/wiki/Who_is_a_Jew%3F There is no universal way to define who is a Jew.