16. That no one may become guilty of sexual vice, or become a profane (godless and sacrilegious) person as Esau did, who sold his own birthright for a single meal. [Gen. 25:29-34.]
17. For you understand that later on, when he wanted [to regain title to] his inheritance of the blessing, he was rejected (disqualified and set aside), for he could find no opportunity to repair by repentance [what he had done, no chance to recall the choice he had made], although he sought for it carefully with [bitter] tears. [Gen. 27:30-40.]
18. For you have not come [as did the Israelites in the wilderness] to a [material] mountain that can be touched, [a mountain] that is ablaze with fire, and to gloom and darkness and a raging storm,
19. And to the blast of a trumpet and a voice whose words make the listeners beg that nothing more be said to them. [Exod. 19:12-22; 20:18-21; Deut. 4:11, 12; 5:22-27.]