The walled city represents the bishop's episcopal authority over his Diocese, and his defence of the faithful in it. The eagle soaring above the city represents the bishop's uprightness of life, and his sound theological preaching of the Gospel, which should soar above all worldliness and elevate the hearts and minds of the faithful. Around the eagle's head is a halo, in imitation of the eagle used to depict St. John the Divine, and symbolizing theological attainments and the grace of the Holy Spirit.[2] The eagle is also a reminder that, "as an eagle can see clearly over distances, so must a bishop oversee all parts of his diocese."[3]