Jesus first explains the purpose of his revelation, namely, to show his servants the things that must soon take place.
This covers Revelation 1:1–3. Then, before he proceeds to detail the things that must take place, the Lord passes on his divine greeting in Revelation 1:4–8.
1 The revelation of Jesus Christ, which God gave him to show to his servants the things that must soon take place. He made it known by sending his angel to his servant John,