At a different time in Revelation and angel did command John to write some things down.
But here in chapter 1, it's Jesus Himself.
It's there in plain clear words and if you have an issue with that, then therer's really nothing anyone can say to convince you.
If the word of God doesn't do it, nothing else will.
Admitting you were wrong is not the and of the world. It's the end of pride and self-deception.
Clear example of Confirmation Bias.