Budman, I don't know about that but I'm going through Hebrews right now slowly with a MacArthur commentary. I plan on reading it with the commentary from the Pillar set too. It is amazing, especially if you understood much of what Worldwide Church of God taught...there are parts of Hebrews which apply to their bad doctrines and it can be very instructive.
My goal is to go through the entire New Testament over some number of years with both MacArthur's commentaries and the Pillar set..two different sets to round out my views. I am mainly focused on Romans, Hebrews, Galatians, Colossians for now due to my former Sabbathkeeping background. I want to be well-equipped to defend my position from the context of the books.
The message of Hebrews is "better than". Jesus Christ is "better than" the angels, Moses, Joshua, Aaron, etc. The New Covenant is "better than" the Old Covenant. We have a better "Sabbath" than the Old Covenant Sabbath, which is our rest in Jesus Christ.
The book is actually really amazing from that perspective, and the assertions of Sabbathkeepers in this regard fall apart in the context of the entire book.
I first got exposed to this through the book Sabbath in Christ by Dale Ratzlaff..he gives a summary of the book that is really helpful from my perspective.
MacArthur doesn't know who wrote the book but he doesn't think it's Paul due to the style. It could have been Apollos. But it was mainly addressed to a group of Jews who had rejected Judaism but hadn't stepped into the rest of faith in Jesus Christ. The converted believers were told to encourage them to make that faith decision. That is why it urges them to enter God's rest in Hebrews 4. It is not talking about the Sabbath, it is talking about their faith decision.