Here is the blog activity on the book of Hebrews for the month of January:
Charles Savelle talks about The Implications of the New Covenant Sacrifice of Christ in Hebrews 9:23-28.
Keith Reich illustrates συγκρισις or comparison with an example from Hebrews 3:3-6.
Matt Capps is teaching a Book Study on the Book of Hebrews. He provides a short introduction.
David Ker discusses the meaning of αντί in Hebrews 12:2. See also the extensive discussion in the comments section.