Concerning Kedar, &c.— The kingdoms whose metropolis is Hazor or Petra; so called, according to Strabo, because it is guarded by a πετρα, or rock, on all sides. See Vitringa on Isaiah 21:13 and Genesis 25:13.
Related Commentaries of Jeremiah 49:28
Jeremiah 49:28
28 Concerning Kedar, and concerning the kingdoms of Hazor, which Nebuchadrezzar king of Babylon shall smite, thus saith the LORD; Arise ye, go up to Kedar, and spoil the men of the east.