"Christ's Church, the Keeper of the Truth; the Truth, the Keeper of Christ's Church!

I. Our High Calling and Holy Conduct in the Church of the Living God (15a)

II. Our High Calling and Holy Privilege as the Pillar and Buttress of the Truth (15b)

III. The Great Mystery (the opened secret) of Gospel Holiness (16)

A. Objective contents of the Gospel

1. God incarnated for the work of redemption: manifested in the flesh

2. The success or perfection of the work established: vindicated by the Spirit

3. The progress of the work of salvation outlined: observed by angels and proclaimed throughout the Gentile world

4. Christ's conquest announced: believed on in the world, received back into glory

B. Subjective and experiential sense of the supreme value of Christ's work in the world through His church