Charles Ellicott Commentary 2 Chronicles 21:16

"And Jehovah stirred up against Jehoram the spirit of the Philistines, and of the Arabians that are beside the Ethiopians:" — 2 Chronicles 21:16 (ASV)

Moreover. — And, here equivalent to so.

The Lord stirred up against Jehoram. —Isaiah 13:17. The phrase, “stirred up the spirit”—i.e., the will—of a man to an undertaking, is found in Jeremiah 51:11; Haggai 1:14 (Compare to 1 Chronicles 5:26; Ezra 1:1).

The Philistines, and of the Arabians. —These are mentioned together elsewhere as enemies of Judah (See 2 Chronicles 26:7; 2 Chronicles 17:11; Jeremiah 25:20). The invasion of the Philistines and Arabians accords with Joel 3:4-6, and is certainly historical (Thenius on 2 Kings 8:23–24).

That were near the Ethiopians. —Literally, At the hand of (i.e., beside) the Cushites. Some tribes of southern Arabia. There were Cushite settlements on both sides of the Red Sea. Septuagint, well: τοὺς Ἄραβας καὶ τοὺς ὁμόρους τῶν Αἰθιόπων; Vulgate, “qui confines sunt Aethiopum.”