Rev 1:2

1:2 testimony of Jesus Christ. Because of the imminence of persecution threatening to suppress Christian witness (17:6), Revelation is full of the theme of witness. Jesus Christ is the preeminent witness (v. 5; 3:14; 19:11). Imitation of Him may include martyrdom (12:11). Revelation itself is a testimony intended to strengthen the testimony of its readers. Its message carries full divine authority and authenticity (19:10; 22:6, 16, 20).