The second window of the church triplet is concerned with the authority and leadership of the church.  It shows St. Peter holding keys and a book, standing adjacent to a rock.

    This image signifies the event of Matthew 16:18 in which Jesus says “Thou art Peter and upon this rock I will build my Church, and the gates of Hell will not prevail against it.”  Peter was given the authority of Jesus to lead the Church, once Jesus ascended to heaven.  The keys, and ancient Jewish symbol, signify authority to rule, (Isaiah 22:15-25, Matthew 18:18, Luke 22:31-32, John 21:15-17) while the book represents his authority to teach and interpret revelation (1 Peter 1:20-21) -- this authority is still enjoyed by the Pope, John Paul II, the 264th successor of Peter.  The book also represents sacred Scripture.  Therefore the combination of both Peter and the book represents the foundation of the Church found in the balance between Sacred Scripture and the tradition of the church passed down through the ages.
 

Introduction
Abraham ( 1  2  3) Readings/Reflections
Moses     ( 1  2  3) Readings/Reflections
Jesus        (1  2  3)  Readings/Reflections
Church     (1  2   3)  Readings/Reflections
Conclusion