Please note the word mystery…
The
mystery of the seven stars which thou sawest in my right hand, and the seven golden candlesticks. The seven stars are the angels of the seven churches: and the seven candlesticks which thou sawest are the seven churches. -
Revelation 3:20
Candlesticks - Seven church congregations
Stars - Individuals within the congregations, all held in the right hand of Christ
Seals - The seven seals sealed each congregation within the lambs book of life
And I wept much, because no man was found worthy to open and to read the book, neither to look thereon. -
Revelation 5:4
Mystery - Strongs - μυστήριον mystḗrion, moos-tay'-ree-on;
- hidden thing, secret, mystery
- generally mysteries, religious secrets, confided only to the initiated and not to ordinary mortals
- a hidden or secret thing, not obvious to the understanding
- a hidden purpose or counsel - secret will
1. of men
2. of God: the secret counsels which govern God in dealing with the righteous, which are hidden from ungodly and wicked men but plain to the godly
This is my interpretation of the mystery of the seven churches. Also to note that this revelation was written to shew us what will come to pass…
The Revelation of Jesus Christ, which God gave unto him, to shew unto his servants things which must shortly come to pass - Revelation 1:1
So the churches, therefore, were to come to pass in history, and Christ wanted to address the issues that would come upon the church.