And the sixth angel sounded — Under this angel goes forth the second woe. And I heard a voice from the four corners of the golden altar — This golden altar is the heavenly pattern of the Levitical altar of incense. This voice signified that the execution of the wrath of God, mentioned Revelation 9:20-21, should, at no intercession, be delayed any longer.
Related Commentaries of Revelation 9:13
Revelation 9:13
13 And the sixth angel sounded, and I heard a voice from the four horns of the golden altar which is before God,