The number 12 could be very symbolic. As Icp stated, 12 is divisible by 4 and 3.
3 may symbolize the Holy Trinity or a perfect union of body, mind and soul.
4 may symbolize a square/stability and harmony with the four elements (Earth, Wind, Fire, Water); the Four Directions; the four seasons.
I agree with Icp that the Eagle giving you the feathers may mean you are being entrusted by the Old Ones.
The "other person" is more than likely your Spiritual Guide. The bright, golden white light is very spiritual; climbing very high up is symbolic of your Spirit traveling to higher dimensions.
I am anxious to know what Cecil thinks about this dream. It seems more like a Vision rather than a dream.
