If you haven't seen it already, I would recommend "The Chosen"! The first episode of Season 2 can be viewed by clicking here!
Smith's Bible Dictionary
Idumae'a. (red). See Edom.
These files are public domain.
Smith, William, Dr. Entry for 'Idumaea'. Smith's Bible Dictionary. https://www.studylight.org/dictionaries/eng/sbd/i/idumaea.html. 1901.