A member of Judaism is called a Jew or a Jewish person.
The religion is Judaism. A person who follows Judaism is Jewish.
Reformed Judaism believes that the Bible is the main source for the rules of Judaism.
Judaism does not have a centralized leadership.
Israel.
The Torah.
JUdaism
Abraham is known as the father of Judaism, but there is no person known as "the leader of Judaism".
There is no one biggest person in Judaism. There have been thousands of leaders, teachers, and rabbis.
Nothing. Jews do not seek converts. If a person wishes to convert to Judaism, they are permitted to do so, but Judaism teaches that Judaism should not be proselytized.
Judaism does not have a centralized leadership.
Abraham and Moses.