It opened its mouth to blaspheme against God, blaspheming his name, his dwelling place, and those who dwell in heaven.
In context
4They worshiped the dragon, because he had given his authority to the beast, and they worshiped the beast, saying, “Who is like the beast? Who can wage war against it?” 5The beast was given a mouth that spoke arrogant and blasphemous words, and it was given authority to act for forty-two months. 6It opened its mouth to blaspheme against God, blaspheming his name, his dwelling place, and those who dwell in heaven. 7It was allowed to wage war against the saints and to conquer them, and it was given authority over every tribe, people, language, and nation. 8All who dwell on the earth will worship it, everyone whose name has not been written in the book of life of the Lamb who was slaughtered, from the foundation of the world.