This study examines comparison in Hebrews in the light of ancient rhetorical theory of syncrisis, identifying five epideictic syncrises: the messengers/angels vs. Jesus (1.1-14; 2.5-18), Moses vs. Jesus (3.1-6), the Aaronic high priests vs. Jesus (5.1-10), the Levitical priestly ministry vs. the Melchizedekian priestly ministry (7.1-10.18), and Mt. Sinai vs. Mt. Zion (12.18-24). The study shows that these comparisons collectively function as a single syncritical project that argues for the superiority of the new covenant to the old, and that the project, like most of the individual comparisons, is arranged topically in accordance with ancient rhetorical theory.