You shouldn't believe that religions don't deserve respect.
Gavin hasn't been apart of a religion for a long time, unlike his family.
Gavin wants to join a new religion.
Gavin chooses a popular, traditionally moral religion in his country to follow.
Gavin joins the 'Church of Satan' and reads all their literature.
Gavin's family is proud of him for maintaining a good image and Gavin is pleased at them.
Gavin's family chastises Gavin for picking such a selfish religion and Gavin feels insulted.