T. Austin-Sparks emphasizes that the ultimate goal of the Church is to attain 'the measure of the stature of the fulness of Christ,' as stated in Ephesians 4:13. He explains that the Church, as the Body of Christ, is essential for His completeness, and that various ministries within the Church must work together in harmony to achieve this goal. Each member's unique gifts and functions should be recognized and utilized for the collective growth of the body, avoiding imbalance that can lead to weakness. Sparks highlights the importance of being led by the Holy Spirit in discovering one's ministry, rather than relying on human appointment. Ultimately, the Church's progress towards the fulness of Christ requires mutual cooperation and a focus on spiritual maturity.