13 The sixth angel sounded his trumpet, and I heard a voice coming from the four horns of the golden altar that is before God.

Read Revelation 9:13 Using Other Translations

And the sixth angel sounded, and I heard a voice from the four horns of the golden altar which is before God,
Then the sixth angel blew his trumpet, and I heard a voice from the four horns of the golden altar before God,
Then the sixth angel blew his trumpet, and I heard a voice speaking from the four horns of the gold altar that stands in the presence of God.