My mother moved out her parents house when she was just 16 because she couldn’t deal with my grandfather religiousness. However up until recently she had never told us why he had suddenly turned to hardcore religion.
My grandfather had always been, by all accounts, a really religious and upstanding man. In the second world war he lived in what in a small manorhouse with my grandmother in a village where he was the local headmaster. When the war broke out they were asked to take in a local jewish girl, whom they promptly adopted as their own daughter. Even managing to keep up the charade when German officers were stationed in their house.
After the war the girl’s relatives, whom had settled in Canada, managed to track her down. I know sending her off to Canada broke my grandparents hearts as they had really wanted children but unfortunately my grandmother was infertile. Instead they adopted my mother and her brother directly after the war.
However his shift to religion happened in the fifties when he volunteered as a teacher in a prison/asylum. It turns out that during one of his lessons he was raped by a prisoner (something which apparantly was not uncommon in prisons and hospitals at the time) Before that event he had been a somewhat religious man but that event send him almost mad and he spend the rest of his life what can best be described as atoning for a sin that had been forced upon him.
He started spending copious amounts of time in church, enforcing strict rules upon his household, started giving away everything he had, even when he inherited a fair amount of money, he gave everything to charity. When he died in his mid-80s, his time was spend between church, working for numerous charities, and teaching immigrants and their children in his neighborhood.