The proposition consists of two parts: Part 1: The face is made to radiate... This is the phenomenon that we must understand as manifested in the human form, namely, the face. Part 2: Thus all the worlds... This is the underlying secret corresponding to this phenomenon in the scheme of the worlds.
Part 1: The face is made to radiate... To explain this matter: The parts of the body and their functions here below always signify parallel aspects of the government above. The face exists as one part of the body through which the soul (נשמה, neshamah) turns to and supervises what concerns the body in relation to that which is outside of it, through the faculties of vision, hearing, smell and speech. The soul remains in its sanctuary and through these organs experiences all these sensations.