Well one example is cellphones we can live without them but we really feel the need to have them
In the sestet from Sonnet XIX by John Milton,the idea of service to God interpreted is that God asks only for faith, devotion, or acceptance rather than asking for demand of work. It is that the God just wants faith and devotion of people to him rather than any kind of works.
C I think cause in the book it say revenge but guilt kinda has almost the same