Revelation 8:13
And as I observed, I heard an eagle flying overhead, calling in a loud voice, "Woe! Woe! Woe to those who dwell on the earth, because of the trumpet blasts about to be sounded by the remaining three angels!"

Revelation 9:12
The first woe has passed. Behold, two woes are still to follow.

Revelation 15:1
Then I saw another great and marvelous sign in heaven: seven angels with the seven final plagues, with which the wrath of God will be completed.

Revelation 16:1
Then I heard a loud voice from the temple saying to the seven angels, "Go, pour out on the earth the seven bowls of God's wrath."