The Jews are a three part people. There are three kinds of Jews: the Priests (Cohanim), their assistants (Levites) and all the rest of the Jews.

Our Torah is a three part Torah. It is composed of the Torah (Five books of Moses), the Prophets, and the Writings (the five "scrolls").

And the Torah was given in three dimensions; in Space, in Time and in Soul. Time is also a creation, just like space. But it is a higher creation than space. The physical objects that exist in space are disconnected from one another. But, every instant of time is connected; past, present and future all exist on one continuum. The Torah operates in time by telling us exactly when to do the mitzvoth. The goal is to elevate time by using our our years, months and days well.