system
A chat on 4chan
human
And they [Gog and Magog, they are people from all over the world, of all nations. Who are these two that are composed of people from all over the world? Sound like two powerful networks almost] marched up over the broad plain of the earth and surrounded the camp of the saints [ἁγίων (hagiōn) Set apart by (or for) God,] and the beloved city, but fire came down from heaven and consumed them,
gpt
[Satan, the opponent] will go out to deceive the nations [ἔθνη (ethnē) etho; races] in the four corners of the earth—Gog and Magog—and to gather them for battle. In number they are like the sand on the seashore.

An ethnic group or ethnicity is a grouping of people who identify with each other on the basis of shared attributes that distinguish them from other groups. Those attributes can include common sets of traditions, ancestry, language, history, society, culture, nation, religion, or social treatment within their residing area.

Ethnicity may be construed as an inherited or as a societally imposed construct. 

More cultural than racial. In the greek it can been both or one of the two.