The introductory article last week on the persistence of evil addressed the downward spiral of an individual. This can also include that of a nation when the Truth of God which is evident to all, because God has so revealed Himself, is suppressed, then exchanged for a lie leading to futility or emptiness of mind concerning spiritual matters.
It would seem plausible that an enemy that has experienced repeated defeat in achieving its purposes would relent and succumb to the authority and rule of the victor.
The humanity of Christ possessed inner joy and happinesses during His earthly ministry which culminated with the Cross.
One of the challenges in life is that of properly handling change.