What did the generation of those who built the Tower of Bavel trying to do? What were the acts of Sodom? What made them do it? Most of the things they did fall into 2 categories – not treating guests properly and perverting justice. There is a debate about Korach and his followers – whether they are deserving of the World to Come or not. THe gemara extrapolates the names of the people in Korach’s group. On ben Pelet was saved by his wife and didn’t rejoin Korach’s group.