Scarcely any book of the New Testament (with the possible exception of Revelation) is so perplexing as the Letter to the Hebrews. Not really a letter to the Hebrews. Not really a letter but a sermon with some features of a letter added to it not really by its putative author Paul but by an anonymous Christian who wrote some of the most elegant Greek in the Bible not really addressed to the Hebrews but to Christians, probably in Rome this is the work that Alan Mitchell explains in this commentary.