See aura and halo
A nimbus in a dream symbolizes spiritual power.
also see Aura
1- The forcc field or electro-magnetic energy that emanates from each of us has a particular quality in those who have undertaken to develop themselves spiritually.
To the clairvoyant eve it can appear as a type of mother-of-pearl radiance.
2- The charisma which many world and spiritual leaders have is felt by many.
The nimbus is usually slightly more subtle, and therefore more far-reaching, than the normal person’s aura.
3- The nimbus is often portrayed in religious pictures as the halo or divine radiance around Christ-like or saintly people.