"Who is a Jew?" (Hebrew: מיהו יהודי‎‎ pronounced [ˈmihu jehuˈdi]) is a basic question about Jewish identity and considerations of Jewish self-identification. The question is based on ideas about Jewish personhood, which have cultural, religious, political, genealogical, and personal dimensions. The definition of who is a Jew varies according to whether it is being considered by Jews on the basis of religious law and tradition or self-identification, or by non-Jews for other reasons, sometimes for prejudicial purposes. Because Jewish identity can include characteristics of an ethnicity, a religion, or peoplehood, the definition depends on many aspects that must be considered.