The Lord has revealed through Watchman Nee that believers must be practically built up with others in the local churches under the authority of the church. This kind of building is a test to genuine spirituality. If one cannot be built up with others in a local church, his spirituality is questionable.
Another revelation received by Watchman Nee, which is closely related to authority and building, was the revelation concerning coordination in the church. All the members in the local church need not only to be built up with others but also to coordinate with others. The service of the church cannot be carried out individually. All the members must serve in a coordinated way.
In the early years of his ministry, Watchman Nee saw the spiritual warfare as a personal matter. However, from 1939 on, he saw that it was not just a personal matter, but a matter of the Body. The warrior in Ephesians 6 is not an individual believer but the Body. Watchman Nee stressed strongly that if believers are individualistic, it will be difficult for them to fight against the powers in the heavenlies. To fight the enemy we need the Body. We need to be not only in the heavenlies but also in the Body.
The period from 1942 to 1948 was a period of longsuffering for Watchman Nee. During this time he learned to see the need of the Holy Spirit's discipline for the reconstitution of our being and for the breaking of the outer man. He saw that God sovereignly arranges our environment to work good for us through the discipline of the Holy Spirit. The Holy Spirit arranges our environment and disciplines us through our environment in order to reconstitute us within with the divine element.