Pillar And Ground Of The Truth

"The word pillar (στῦλος, stylos) would have special significance to the Ephesians in that their city was the site of the Temple of Diana which had 127 marble pillars upon which announcements were regularly affixed. The local church was a pillar upon which the truth was to be held up that all might see it. By “truth” (ἀληθεία, alētheia) Paul means the full revelation of God in Christ as [1 Timothy] verse 16 makes clear...The church is a household called to manifest the truth in its message and to conform to it in its conduct. Paul adds that the church is the “support” or buttress (ἑδραίωμα, hedraiōma) of the truth. The church, the Apostle implies, exists to maintain the faith and protect it from all danger."

Understanding the Church, by Joseph M. Vogl and John H. Fish III, p. 49