Revelation 1 2
who did testify the word of God, and the testimony of Jesus Christ, as many things also as he did see.
Compare with other 3 random translations
LSV Revelation 1:2who testified to the word of God, and the testimony of Jesus Christ, as many things as he also saw.
NCV Revelation 1:2who has told everything he has seen. It is the word of God; it is the message from Jesus Christ.
NKJ Revelation 1:2who bore witness to the word of God, and to the testimony of Jesus Christ, to all things that he saw.