Himyarite Kingdom
Sand argues that it is likely that the ancestry of most contemporary Jews stems mainly from outside the Land of Israel and that a "nation-race" of Jews with a common origin never existed, and that just as most Christians and Muslims are the progeny of converted people, not of the first Christians and Muslims, Jews are also descended from converts. According to Sand, Judaism was originally, like its two cousins, a proselytising religion, and mass conversions to Judaism occurred among the Khazars in the Caucasus, Berber tribes in North Africa, and in the Himyarite Kingdom of the Arabian Peninsula.