Christ’s birth was a “hidden” event, witnessed by only a few. His life for the first 30 years was a “hidden” event. The town in which he lived was so small it could be considered “Hidden” by the standards of the time. His ministry wasn’t to the world at large, but just a small middle eastern country, a country “hidden” by the much larger world at the time.
Much of Christ’s life was hidden. By design, maybe. Did God understand that either Christ’s life and message would be lost in a much larger societal context. I think Christ’s metaphor/analogy of the mustard seed speaks to this idea of why the event that was Jesus the Christ 2000 years ago is aprpros. From the smallest seed, a mighty tree grows.
Not quite the definitive answer you are seeking???