The term used here means to bear witness (the same word was used in Revelation 22:16; in Revelation 22:18 the same word is translated as warn
). The book of Revelation did not originate with Jesus Christ (for the pronoun he
refers to him, Revelation 22:20) but he received it from God (Revelation 1:1). With the use of the word testify,
Christ Jesus indicates that what he showed his servant John was an accurate witness to what he received.
20 He who testifies to these things says, “Surely I am coming soon.” Amen. Come, Lord Jesus!