Very few people have ever heard of the words "Urim
and Thummim", because these are not everyday common
words used by the public. The purpose of this
scroll is to explain what these artificats are,
their purpose and function. These of the Urim
and Thummim was common in the ancient Israelite
Priesthood. The Urim and Thummim were
consulted when it was necessary for a comprehension
of the character of the Israelite Priesthood.
The right of the priesthood is maintained
exclusively for one family of the Levite Tribe, the
family of Aaron (Exodus 28:1) In Detail, this scroll
will describe to you what are the Urim and Thummim,
where they are worn, what is their purpose, and what
is their origin. ...
(the above is an excerpt from the