A key, not another canon
The Metfah does not add a scripture and does not decide between the ones already on the shelf. It is the passage from one book to another: a thread, a word, a line you can follow into Enoch or the Lectern.
A thread
A speaker at the end of a line reads that passage, then the lines after it, until you pause.
Find a line
Thesaurus
The hard words, the old senses, and the names are one list for Enoch and the Lectern. A dotted word in either book opens a note. The list opens every place that word is used.
Open the word list