18-21. In these verses Job quotes the opinions of his adversaries ironically; he quoted them so before (Job 21:7-21). In Job 24:22-24, he states his own observation as the opposite. You say, "The sinner is swift, that is, swiftly passes away (as a thing floating) on the surface of the waters" (Ec 11:1; Ho 10:7).
      is cursed--by those who witness their "swift" destruction.
      beholdeth not--"turneth not to"; figuratively, for He cannot enjoy his pleasant possessions (Job 20:17; 15:33).
      the way of the vineyards--including his fields, fertile as vineyards; opposite to "the way of the desert."

JFB.