The Crown of Glory

Saint Paul crowned with glory. The circle or 'ring of light'
surrounding the head of Saint Paul is the
Halo (the crown of glory).
Photo: Saint Paul's Catholic High School.

The ring of light is the crown of glory described as the light of the glory of God.
The light of my glory will shine on you. (Isaiah 60:19) "GNT"

The light of my glory: the ring of light

Here is one of definition of the term glory:
A ring, circle, or surrounding radiance of light represented about the head or the whole figure of a sacred person, as Christ or a saint; a halo, nimbus, or aureole.

Compare the definition of glory above with this definition of halo:
A geometric shape, usually in the form of a disk, circle, ring, or rayed structure, traditionally representing a radiant light around or above the head of a divine or sacred personage. - 

When the two definitions are compared, the outcome is that the ring of light or halo is the same thing as glory. The ring of light in the definition of glory is described as "surrounding radiance of light", and in the definition of halo the ring of light is described as "a radiant light".

It is clear from the two definitions that the light either encloses the whole figure of a sacred person or surround the head of the sacred person. When the whole figure of a sacred person is surrounded by the light, the person is wrapped or clothed in glory. Here the light acts as a majestic robe called aureole.
O LORD my God, you are very great; you are clothed with splendor and majesty. (Psalm 104:1)

Clothed with splendor and majesty: clothed in glory or wrapped in aureole or surrounded by light.

Halo is the crown of light on a sacred person when the light surrounds the head of the person like a crown. It is the magnificent crown of glory God promised his people. This is the crown the early Christians laboured and died for. Stephen, Paul, James, and all the christian martyrs risked their lives in order to be crowned with this light.

The crown of glory is the reward of the Saints. It is the reason God's chosen people endured so much suffering while doing the work of God on earth. The apostle Paul had no doubt about God placing the halo on him; he described the halo or crown of glory as the crown of righteousness. He said,
Now there is in store for me the crown of righteousness, which the Lord, the righteous Judge, will award to me on that day - and not only to me, but also to all who have longed for his appearing. (2 Timothy 4:8)

Crown of Righteousness = Crown of Glory
                                        = Ring of Light
                                        = Halo

The crown of glory or halo reconciles man to God. Reconciliation here implies the forgiveness of sin. This means that God has forgiven the sins of his people and have reconciled them to himself. God's people live in harmony with God and in the presence of God.