There are two kinds of rules. One is the mitzvot (commands) of the Torah, and the other is the halakhot (laws) of the Talmud. The Talmud explains the Torah's laws, provides further detail, and renders precise rulings in specific circumstances. Here's an example: one mitzva (command) of the Torah is to recite the Shema prayer (Deuteronomy ch.6). The Talmud discusses details such as if you may recite the Shema earlier than the prescribed time (Talmud, Berakhot 9a).
The mitzvot (Torah-commands).
Judaism is called Judaism.
Reformed Judaism believes that the Bible is the main source for the rules of Judaism.
The Torah.
They are called "Jews".
People who practice Judaism are called Jews.
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Judaism was not "assembled". It came about through the rules established in the Torah, supported by the Prophets, and organized and expanded by the Rabbis.
Followers of Judaism are called Jews.
There are no churches in Judaism.
Clergy for Judaism are called rabbis.
A member of Judaism is called a Jew or a Jewish person.