> The reference to Ephrathah reinforces the tie to David's family. This places the text firmly in a messianic context
Does it? David was a lot of things. Ancestor of a promised Messiah was only one of those things - and the text doesn't mention David at all. Each of the steps "Bethlehem means David" and "David means "Messiah" is a stretch. What's the chance that they're all valid conclusions about what Micah meant?
> ...Linking this future ruler to the origins of David's household rather than to anything in Jerusalem reminds us of how David was chosen directly by God,
It might remind someone of that, but again, this is only one of many possible things it might remind one of. This is another stretch, and likely to be a break in your chain of reasoning.
> breaking with any notions of hereditary royal succession. It suggests the expectation of a new David.
Again, this is only one possible thing one might think of when pondering these things. It seems to me almost certain that you (or your sources) are putting these ideas into the text, not getting them out of it.
> the prophecy that this Israelite king will rule Assyria.
You then claim that this verse, in the (somewhat dubious) light of Micah 5:2-5 being a Messianic prophecy, is
> figurative of God’s people being delivered from oppression
We have to acknowledge that the prophecy was not literally fulfilled - Israel never did rule over Assyria under a King from Bethlehem, so figurative is all that's left.
However, your argument that it must be specifically figurative of God's people being delivered from oppression:
- * is, as I've pointed out, based on a lot of supposition, and
* has not been literally fulfilled - God's people have not been delivered from physical oppression - Jews and Christians suffer no less than anyone else.
Will you claim that the figurative meaning of Micah's words has been spiritually fulfilled, and that's good enough to count as a "fulfillment" of a "prophecy?"