Every valley will be filled. Every mountain and hill will be brought low. The crooked will become straight, And the rough ways smooth.
      (1.) Were thereby obliged to repent of their sins, to be sorry for what they had done amiss, and to do so no more. The former they professed, and were concerned to be sincere in their professions; the latter they promised, and were concerned to make good what they promised. He bound them, not to such ceremonious observances as were imposed by the tradition of the elders, but to change their mind, and change their way, to cast away from them all their transgressions, and to make them new hearts and to live new lives. The design of the gospel, which now began, was to make men devout and pious, holy and heavenly, humble and meek, sober and chaste, just and honest, charitable and kind, and good in every relation, who had been much otherwise; and this is to repent.