The sacrifices which the Hebrews once made proved their confidence—confidence in an unseen future—which they boldly proclaimed; and at the same time, they confirmed it. The lesson of the past, therefore, encouraged them to still further endurance. And such endurance God claims from His people.
Westcott, Brooke Foss, ed. The Epistle to the Hebrews the Greek Text with Notes and Essays. 3d ed. London: Macmillan, 1903. Print. Classic Commentaries on the Greek New Testament.