…which becomes so powerfully unified that it even causes the exteriors to become attached to one another. It is the joining of the Ruachs that causes the exteriors to become attached as well.

Part 2: However this comes about only when both Zeir Anpin and Nukva are complete. The concealment of the unity shows the deficiencies that exist without it, while the revelation of the unity is the repair of the deficiencies. Before it is possible to reach the ultimate revelation of the unity, all the previous deficiencies must be repaired. This can be accomplished either through the efforts of the lower creations or – if they fail – through the hand of the Supreme Will. In either case, first the more serious of the remaining deficiencies will be repaired through Maturity and Mental Powers until little by little things will reach this ultimate perfection. It is the removal of all the deficiencies that facilitates Coupling, which is the revelation of the unity.