The proposition consists of two parts: Part 1: The state of Back-to-Back… This explains the concept of Back-to-Back. Part 2: This requires… This is the repair that brings them Face-to-Face.
Part 1: The state of Back-to-Back is one of excitation of Strengths… The concepts of the Face and Back were discussed earlier (see Opening 76). The Face consists of those lights that shine to their receivers, while the Back consists of lights that do not shine to those looking there. Every level includes both aspects. All that shines comes from the category of Kindnesses, while that which does not shine comes from the category of Strengths. When we say Back-to-Back it means that the aspects of Zeir Anpin and Nukva that do not shine are both aroused at once.