The judgment is extended to “the isles” (or, seacoast) to show that it should fall not only on Gog and his land, but on those who share Gog’s feelings of hatred and opposition to the kingdom of God.
Related Commentaries of Ezekiel 39:6
Ezekiel 39:6
6 And I will send a fire on Magog, and among them that dwell carelesslyc in the isles: and they shall know that I am the LORD.