Doctors of the Church
Catholic Christians believe that the promise of the Spirit of
Truth to guide believers in truth is found in the constant faith
of the Church as preserved in the writings of the Doctors of
the Church also, equally "faithful people."
The Doctors of the Church are eminent Christian teachers
who are proclaimed to  be worthy of the title.
The Church recognized these faithful people and teachers for
their contribution to the belief and understanding of the faith.
Doctors of the Church must be canonized a saint, known for
their learning, and must be proclaimed such by either the
Bishop of Rome or an ecumenical council.