The Arabians, that were near the Ethiopians - Probably Joktanian Arabs from the neighborhood of the Cushites. Southern Arabia was originally occupied by Cushites, or Ethiopians Genesis 10:7, whose descendants still exist in a remnant of the Himyaritic Arabs.
Related Commentaries of 2 Chronicles 21:16
2 Chronicles 21:16
16 Moreover the LORD stirred up against Jehoram the spirit of the Philistines, and of the Arabians, that were near the Ethiopians: