Paul tells us that as Christians we are members of an exalted household, built on the foundation of the Apostles and Prophets, held together by the capstone of Christ.
Paul compares the Church to a Gothic cathedral that consists of a line of arches that are held in place by a single capstone running the length of the cathedral.
In calling the foundation stones the Apostles and Prophets, Paul was saying that we cannot introduce any novelty beliefs that are not in tune with God’s Revelation that came to us through the Old and New Testaments.
I twice saw how the placing of a capstone permanently locked into place the arched walls ascending from the sides.
Once in Korea, some Buddhist monks were rebuilding their badly shelled monastery, and I helped them by making signs in English for American tourists.
They replaced their bombed away entrance arch by building a clay arch, then stacking the big wedged stones up both side. When they were near the top, they wedged a short arch of stone between the two sides, Once it was locked in place, they pulled the clay mound out from under it, leaving the arch entrance arch to stand until the next awful war.
The other arch I said I saw locked in place, I didn’t actually see. The 930 feet tall Gateway to the West arch on the St. Louis.’s waterfront was completed in 1965 while I was still in Korea. But after I arrived back the next year, I visited the Arch’s museum where they showed a movie of giant cranes lifting the 142 stainless steel sections to where they fit. Once they wedged the capstone into place between the sides; the structure, like our Church, was fixed in place till the end of time.