The Christian Church, as were the Tabernacle and Temple, is intended to exist for a time to fulfill God’s purposes on earth. At the Second Coming, I believe, it will cease to exist, having served its purposes on earth and it will no longer be needed in heaven because believers will have direct access to the persons of the Trinity.
Jesus Christ is in charge of the Christian church as it is the extension of the work he came to do on earth. There is powerful symbolism in the New Testament portraying Christ as the bridegroom and the church as his bride. The meaning of this is, I think, that the Christian church must be prepared, eager, watchful, energetic, pure, and so forth to be ready to give itself to its Lord when he returns. This will not be as an organization or other human entity but as it will have birthed and been the mother of the people of the universal church.
The universal church is the totality of all believers, past, present and future that have been brought into the kingdom of God through the effectual work of Jesus Christ. There is, therefore, one church that is the body of Christ in the world. This is the holy catholic church of the Nicene Creed.