Hebreus 10:35-36

Now was not the time to discard that confidence in a better reward (cf. Hebrews 3:6; Hebrews 4:16; Hebrews 10:19). They needed to persevere, to keep on keeping on. By doing this they would do God’s will and eventually receive what He promised, namely, an eternal reward (Hebrews 1:14; Hebrews 3:14; Hebrews 9:15; Matthew 6:19). [Note: Cf. Dillow, p. 129.] This exhortation is a good summary of the whole message of Hebrews. [Note: Cf. Hodges, "Hebrews," p. 806.]

"What they had endured for Christ’s sake entitled them to a reward. Let them not throw it away. The NT does not reject the notion that Christians will receive rewards, though, of course, that is never the prime motive for service." [Note: Morris, pp. 110-11.]

"The safeguard against degeneration, isolation, and consequent failure is to make progress in the Christian life, and to proceed from point to point from an elementary to the richest, fullest, deepest experience." [Note: Thomas, p. 11.]

If the writer’s concern had been the salvation of those readers who were unbelievers, this would have been an opportune time for him to exhort them to believe in Christ. He could have written, "For you have need of regeneration." Instead he exhorted his readers to endure rather than apostatize.