Revelation 1 2
who bore witness to the word of God, and to the testimony of Jesus Christ, to all things that he saw.
Compare with other 3 random translations
EAS Revelation 1:2I, John, have written about everything that God showed me. These things are a true message from God. They are the things that Jesus Christ says are true.
ASV Revelation 1:2who bare witness of the word of God, and of the testimony of Jesus Christ, even of all things that he saw.
LSV Revelation 1:2who testified to the word of God, and the testimony of Jesus Christ, as many things as he also saw.