Jamieson, Fausset and Brown on Isaiah 28:19

19. From the time, &c.--rather, "As often as it comes over (that is, passes through), it shall overtake you" [Horsley]; like a flood returning from time to time, frequent hostile invasions shall assail Judah, after the deportation of the ten tribes.

vexation ... understand ... report--rather, "It shall be a terror even to hear the mere report of it" [Maurer], (1Sa 3:11). But G. V. Smith, "Hard treatment (Horsley, 'dispersion') only shall make you to understand instruction"; they scorned at the simple way in which the prophet offered it (Is 28:9); therefore, they must be taught by the severe teachings of adversity.