In 1969, Grand Funk Railroad was an unknown rock band. Two years later, they sold out Shea Stadium faster than the Beatles. Mark Farner — the group’s lead vocalist and principle songwriter — is still touring four decades later. The self-coined “cussing Christian” talks to Here’s the Thing host Alec Baldwin about his Christian faith, the time he almost died twice in one night, and how he wrote one of his greatest hits in the middle of a fight with his first wife.