Could this section of the Emerald Tablet be the earliest recorded instructions of Astral Projection?

"Deep in the silence, first ye must linger until at last ye are free from desire, free from the longing to speak in the silence. Conquer by silence, the bondage of words. Abstaining from eating until ye have conquered desire for food, that is bondage of soul.

Then lie ye down in the darkness. Close ye your eyes from the rays of the Light.

Center thy soul-force in the place of thine consciousness, shaking it free from the bonds of the night. Place in thy mind-place the image thou desireth. Picture the place thou desireth to see. Vibrate back and forth with thy power. Loosen the soul from out of its night. Fiercely must thou shake with all of thy power until at last thy soul shall be free."