1. Revelation 1:3 (ESV)
  2. Exposition

How is John’s report of what he saw to come to the churches?

Revelation 1:3 (ESV)

3 Blessed is the one who reads aloud the words of this prophecy, and blessed are those who hear, and who keep what is written in it, for the time is near.

Someone would need to read John’s account. John, in other words, needs to write it down and ensure its distribution. See also Revelation 1:19. The one privileged to read these words is blessed, happy. The same is true for those who hear the reading of this revelation and take seriously what is written.