This depicts the fivefold ministry Jesus gave to the Church. Jesus was the perfect balance of all five. The keys are necessary to unlock the hidden things of the kingdom.
Apostle (Purple-Lion) authority leadership
Prophet (Blue-Eagle) revelation and heaven
Pastor (Green-Lamb) healing, life, and growth
Teacher (Yellow-Owl) wisdom and understanding
Evangelist (Orange-Dove) fire revival
The keyhole is the throne of God releasing the seven Spirits of God into the earth.