Hebrews Preaches the Old Testament

"For, more than any other NT book, Hebrews, from beginning to end, preaches the OT. The author's explanations of the text serve ultimately to communicate a forceful message aimed at convincing the hearers/readers to respond by persevering in following Christ and standing with his church. His Christology vies for a christocentric life. His hortatory material has one aim: to present a resolute call to endurance and holy living. This is the task that he takes up in taking up the OT, and he carries it out with rhetorical power and artistry." (p. 923)

Guthrie, George H. eds., DA Carson, GK Beale. Commentary on the New Testament use of the Old Testament.