We could consider earth to be the theater of the universe! JTL15 12.1
In the book of Job, the account of a cosmic convocation involving representatives from various parts of the universe gives additional insight into the great controversy. The narrative describes a dialogue between Satan, who came among the representatives, and the Lord, in which Satan tells God he has been going back and forth on the earth. A dialogue ensues regarding Job’s obedience and the motivation for his exemplary life. JTL15 12.2
Job’s cosmic perspective provides powerful proof of the great controversy between Christ and Satan and its impact on the universe. This planet is the stage on which this dramatic struggle between right and wrong is being played out. JTL15 12.3