Wow… talk about missing the point entirely…
There have been dozens upon dozens of books written by Catholic authors delving into Revelations. Your assertion that a book as complicated, historically and symbolically rich, and as important as Revelation could be explain in a single volume is… well… the word I’d use is asinine.
Spend some time reading good Catholic literature, it’ll help you out with these issues.
One of the revelations in Revelation is that John actually wrote the Pauline epistles.
The seven letters to the seven churches are reminiscent of Paul’s letters, no?
Ephesus (Revelation 2:1-7) - the church known for having laboured hard and not fainted, and separating themselves from the wicked; admonished for having forsaken its first love (2:4)
Smyrna (Revelation 2:8-11) - the church admired for its tribulation and poverty; forecast to suffer persecution (2:10)
Pergamum (Revelation 2:12-17) - the church located at ‘Satan’s seat’; needed to repent of allowing false teachers (2:16)
Thyatira (Revelation 2:18-29) - the church known for its charity, whose “latter works are greater than the former”; held the teachings of a false prophetess (2:20)
Sardis (Revelation 3:1-6) - the church that has a good name; cautioned to fortify itself and return to God through repentance (3:2-3)
Philadelphia (Revelation 3:7-13) - the church steadfast in faith, that had kept God’s word and endured patiently (3:10)
Laodicea, near Denizli (see Laodicean Church) (Revelation 3:14-22) - the church that was lukewarm and insipid (to God) (3:16)
If you speak Latin you will see in the first letters of the names of the churches form the word EPISTOLA which means LETTER.
The remaining two first letters are SP{ for SAUL/PAUL.
Quite the coincidence, huh?
The first letters are EPSTL SP, leaving from EPISTOLA ----- A IO which is ‘BY ME’.
John admits he wrote the Pauline epistles. It’s an ancient code form. In this case Roman world, Roman code.