Charles Ellicott Commentary 2 Chronicles 16:8

"Were not the Ethiopians and the Lubim a huge host, with chariots and horsemen exceeding many? yet, because thou didst rely on Jehovah, he delivered them into thy hand." — 2 Chronicles 16:8 (ASV)

Were not the Ethiopians and the Lubims (Kûshîm and Lûbîm) a huge host? —An instance confirming what was said in 2 Chronicles 16:7. Cushites and Libyans were banded together in Zerah’s great army, just as Syrians and Israelites might have united in assailing Judah, yet the victory had fallen to Asa (2 Chronicles 14:9–15).

Cushites and Libyans were among the constituents of Shishak’s army (2 Chronicles 12:3). Clearly, therefore, Zerah was master of Egypt.

(The Hebrew of this and the next verse is unmistakably the chronicler’s own. Literally, it runs: “Did not the Cushites and the Libyans come to an army, to abundance, (as) to chariots and to horsemen, to abounding greatly?”)

Neither the Libyan contingent nor the horsemen are mentioned in 2 Chronicles 14:9. Apparently, the writer is making extracts from fuller sources.