Most books relating to religion will be located on the second floor of the library. If you like browsing, try these call number areas:
BL - Religions, Mythology, Rationalism
BM - Judaism
BP - Islam, Bahaism, Theosophy, etc.
BQ - Buddhism
BR - Christianity
BS - The Bible
BT - Doctrinal Theology
BV - Practical Theology
BX - Christian Denominations
For more detailed descriptions, check out the Library of Congress Classification Outline.
Below are some examples of books that you will find in the stacks of Beeghly Library. If there's something specific you're looking for, ask your librarian!