What does the term Creed mean and what is an interrogatory Creed and how does it differ from a declarative Creed? From the Creed by Berard L. Marthaler

The word
"creed" comes from the Latin word "credo" which means
"Ibelieve."

You can find what Marthaler means by
"interrogatory" and"declarative" creeds very early in the book -- in the
Introduction onpage 5, for example.

In the book, Marthaler gives examples of
interrogatory creeds.  These are in the form of questions to the person.  This is the sort of
thing that is asked of adults during a baptism ceremony in the Catholic Church.

Marthaler says that the Church then moved towards having declarative creeds like the
Nicene Creed.  In these, the people simply state their beliefs rather than being
asked.