In the New Testament age, God is doing a specific work in His Son and through the Holy Spirit. He is entering into people that they may be filled with the element of God, and He is bringing these people, who are filled with His element, into Himself. This is the mingling of God with man; this is the building of God. The believers who have been mingled with God are built up together in Him. “The builded church is not composed of only human beings. Rather, the building of the church is accomplished by building God into man. When God is in all of us, and we are in God, we are one Body. This is the way that we are built together.” This building depends on the New Testament priests. These priests are not a special class of believers but rather the believers who are in spirit and can be built together in God. In order for the church to be built up, it is necessary for every believer to enter into the Holy of Holies and carry out their priestly service, that is, to pray in their spirit. Only by praying in our spirit can we become living stones that are being built together (1 Pet. 2:5). The present need is for the believers to be built together in spirit to become a living, spiritual temple as the Body of Christ for Him to obtain rest, to be expressed, and to be glorified.