Then after Peter brings people in, John follows with the mending ministry. People should only come in; they should not go out. They come in the front door and should not go out the back door. The back door must be mended to be closed in order to keep people in until they are built up. Eventually, the New Jerusalem comes out of the mending ministry. The one who wrote about the New Jerusalem was not Peter but John, who had the mending ministry. The fishing ministry is for the beginning, and the mending ministry is for the accomplishment. In the church we need these two ministries. Moreover, with these two ministries there is the possibility for the building; thus, between the fishing ministry and the mending ministry there is the building ministry of Paul.
We must have the outreach. We must bring unbelievers to the Lord, spread the word of the gospel, and expand the kingdom of God. I would encourage you, even burden you, to take care of these matters. Otherwise, we are not balanced; we are wrong. (Collected Works of Witness Lee, 1964, vol. 4, “Serving in the Meetings and in the Gospel,” ch. 5, pp. 117-118)
More details via Beseeching.org, day 365.