Verse 5 describes conditions that existed after the Flood. Some of these names appeared in Ezekiel chapter 38 and other places thousands of years later. In the meantime, a natural migration occurred. Verses 2-4 merely show the origin of such individuals—that they were of Japheth. Generally speaking, Japheth’s children went north and west, and Shem’s and Ham’s offspring migrated in other directions.
Nimrod was “a mighty hunter before the LORD [Jehovah].” “Before the LORD” signifies that reverence belonging to Jehovah was going to Nimrod. His influence was such that those who esteemed him regarded him above Jehovah. Nimrod became an idol because of his prowess in hunting. Probably he had a good physical build too.