I just discovered this new book on Hebrews:
Bonggyeong Lim. Horror and Hope: Exodus Theology in the Book of Hebrews. LAP Lambert Academic Publishing, 2012.
"The author endeavors to highlight the concepts of horror and hope in the
book of Hebrews by exploring theological interrelation between the Old
Exodus of Israel and the New Exodus in Christ event. While the concept
of horror is predominantly observed in the warning passages of the book,
the concept of hope is manifested in the sections referring to the
redemptive event of Christ, including His heavenly sanctuary ministry.
Particularly, it is argued that theological themes relating to the Old
Exodus, such as the “revelation of God,” “salvation,” “Moses,” and
“covenant” are developed throughout the book of Hebrews in a way to
demonstrate that Exodus is one of the central motifs of the book as a
whole. In this way, the book of Hebrews is shown to speak of hope to the
humankind who are hopeless and struck with horror, yet, who are looking
forward to the great eschatological Exodus at the end of the world
history. However, it is maintained that this book gives a severe warning
message to the individuals who persistently reject the Captain of the
New Exodus, the Savior of hope, Jesus Christ."