XIV. The Lord's Prayer: An Esoteric Study, Prayer and Meditation
You’ll get an idea of what is meant by 'the great sacrifice', the highest form of the will in divine nature, if you look at it in the following way. Imagine you are standing in front of a mirror and your image is looking at you from this mirror. This image is an illusion but it is your perfect counterfeit. Now imagine you have died, giving up your own existence, your feeling, thinking and your very essence in order to give life to this image, making it into what you yourself are. To give up oneself and one's life to the image—this is something which in the science of the spirit has always been called the emanation, the flowing out. If you were able to do this you would find that you yourself are no longer there, for you have given away everything in order to resurrect life and conscious awareness in the image.
Cite:
GA 96/1907-01-28_02/p017 · edition English