Revelation 10:11
And they said to me [Note: The plural "they" may mean simply "it was told to me"], "You must prophesy again about many races, and nations, and language groups and kings."
Revelation 11:9
And people from among the races and tribes and language groups and nations will gaze at their dead bodies for three and a half days, and they will not permit their bodies to be buried.
Revelation 14:6
Then I saw another angel flying in mid heaven. He had eternal good news to proclaim to those who lived on the earth, and to every nation, tribe, language group and race.
Revelation 17:15
Then the angel [See verses 1,7] said to me, "The waters you saw, on which the prostitute sits [See verse 1] are races, crowds, nations and language groups.