The Greek word hagios is used 15 times in Ephesians. Six of these occurrences are translated holy, which is the normal rendering of this adjective. But the word is also used frequently as a substantive with the definite article preceding it.
As someone who has always found Ephesians to be a dense but fascinating book, I
was immediately intrigued by the premise of Solving the Secrets of Ephesians, by J.
Philip Scranton.