Revelation 8:13

and the night likewise, And I saw and heard an angel flying in the midst of heaven, saying with a loud voice, Wo, wo, wo to the inhabitants of the earth, by reason of the other voices of the trumpets of the three angels who are yet to sound.

Revelation 9:12

One wo is past: behold there come yet two woes after this.

Revelation 11:14

The second wo is past: behold the third wo cometh quickly.

Treasury of Scripture Knowledge

Summary

And he spread it before me; and it was written within and without: and there was written therein lamentations, and mourning, and woe.

Bible References

Lamentations

Revelation 8:13
and the night likewise, And I saw and heard an angel flying in the midst of heaven, saying with a loud voice, Wo, wo, wo to the inhabitants of the earth, by reason of the other voices of the trumpets of the three angels who are yet to sound.
Revelation 9:12
One wo is past: behold there come yet two woes after this.
Revelation 11:14
The second wo is past: behold the third wo cometh quickly.