I hope to come to you soon, but I am writing these things to you so that, if I delay, you may know how one ought to behave in the household of God, which is the church of the living God, a pillar and buttress of the truth. Great indeed, we confess, is the mystery of godliness: He was manifested in the flesh, vindicated by the Spirit, seen by angels, proclaimed among the nations, believed on in the world, taken up in glory.
One of the greatest points from this text is that the church exists for the proclamation of the truth of the gospel. Both a pillar and a buttress are used to support, or to lift up something else. In the case of the church, it exists to lift up the truth of the gospel of Jesus Christ.