Ref: Heiser refers in one podcast to a document: Remnant Theology in Biblical Prophecy [PDF].
We learn that the term “remnant” has both positive and negative connotations in Hebrew depending on the context. The linked article marches through the history of biblical prophecy and how the term was used in various contexts. If nothing else, it’s a very good review of where various prophets fit into the stream of revelation.
Even better, there’s a good look at the Essenes and Qumran Community and their literature. It offers a reference to the Damascus Document (previously called the Zadokite Document) and you can find an outline of it here. The Library of Congress offers a translation of just one fragment here.
There are also various references to the books of the Apocrypha. If you don’t have a hard copy, they are easy to find online. The paper uses some obscure terms:
“lexeme” — a very basic root word in any language’s lexicon, a short word or stem that is part of other words
“topos” — a traditional theme or motif
It’s worth a read.
