example, the repetition of the verb “to see” and the noun “unbelief” in Hebrews 3:12 and 19 marks Hebrews 3:12–19 as a discrete literary unit of commentary on the biblical text found in Hebrews 3:7–11. The purpose and plan of Hebrews is integrally related to the literary structure of the document. The key issue is the distinctive role assigned by the writer to the expository and hortatory sections of the homily. How is the writer’s essential purpose served by the blocks of exposition