Albert Barnes Commentary Ezekiel 38:2

"Son of man, set thy face toward Gog, of the land of Magog, the prince of Rosh, Meshech, and Tubal, and prophesy against him," — Ezekiel 38:2 (ASV)

Gog—Gog of the land of Magog, prince of Rosh, Meshech and Tubal. “Gog” is here the name of a captain from “the land of Magog”—Magog being the name of a people of the north, placed between “Gomer” (the Cimmerians) and “Madai” (the Medes). In the History of Assurbanipal from cuneiform inscriptions, a chief of the Saka (Scythians), called Ga - a - gi, is identified by some with Gog. Rosh, if a proper name, occurs in this connection only.