If you want to go deeper, reading is a must.
E.B. Elliott's Horae Apocalyticae, four volumes, fifth edition.
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C.H. Spurgeon calls it "the standard work on the subject", and it is, in my estimation, the single best resource on Revelation. Â It is both an exegetical and historical masterpiece, filled with wonderful and rare information. Â However, in four volumes, it is an extensive amount of reading. Â You will want the fifth edition.
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There is a relatively inexpensive digital edition available here.
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Printed copies are available here.
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An abridged edition of Elliott's Horae Apocalypticae is available.  The advantage:  You can get the gist with less reading.  However, the loss is significant; most of the persuasive power of Elliott's work is in the painstaking attention to detail.  And we are trying to get beyond mere opinion...
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Matthew Poole's Synopsis of Biblical Interpreters:  Revelation 1-11 is a verse-by-verse history of interpretation.  Originally composed in Latin, a translation will provided for this class.
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James Durham's Learned and Complete Commentary is practical and full of the sweetness of Christ Himself.
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Although I am not able to follow Gregory Beale in his general approach to the Book of Revelation, his Book of Revelation is frequently helpful in matters of detail and difficulty.