I love this book too. If I had to rank the books of the Bible I would definitely put Hebrews at or near the top. It does such a good job of opening up what God was doing in the OT.
I took a course at Pensacola Christian College this past January called "The Tabernacle, Feasts and Offerings." It was excellent, we spent a fair amount of time in the book of Hebrews, specifically chapters 9 and 10.
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