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.
Revelation 17:1
Then one of the seven angels, who had the seven bowls, came and spoke to me, saying, "Come [here]; I will show you the punishment [to fall] on the great prostitute who is situated on many bodies of waters.
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 13:7-8
And he was given [the power] to wage war against the saints [i.e., God's holy people] and to conquer them; and he was given authority over every tribe, race, language group and nation.