If there was a kid drowning in a swimming pool, and someone was sitting by the pool reading a book, and just let the kid drown, they’d be callous jerks. It would be that person’s moral and legal duty to get up and try to save the kid.
The thing is, I know Christians who sit around reading the Bible or praying or watching TV while people are dying and going to hell. They have a heart of stone. Christians are supposed to have been given a heart of flesh. If you’re hoarding the cure for eternal death, while people around you are dying, you should question whether you’ve actually ever received that heart of flesh.