This weight of glory is something all out of proportion in duration (eternal) and substance ("heavy load") to the troubles we now experience. Paul is not speaking of the believer's future reward, nor is he talking about a recompense forthcoming to the Christian for enduring so much distress. This eternal weight of glory is something that our momentary, light troubles are achieving for us now. This takes awhile to sink in. Affliction does not give way to glory; affliction produces glory. The Greek verb for achieve means "to work out" (kata + ergazomai). Paul pictures the process of daily spiritual renewal in terms of a workout in the gym. Segments of our culture place a great deal of emphasis on bodybuilding and weightlifting exercises. Much physical exertion and strenuous effort are demanded. Such activities are not mastered overnight. It takes months of working out to build up the muscles of the body. In much the same way, suffering in the Christian life produces muscles that become a permanent part of our spiritual physique.