 God does intervene to save one person. He does it all the time. And there are times when he doesn't intervene to save the many. I'm sure we can all think of examples from Pearl Harbor to 9-11 to Columbine. There are also times when God may intervene to save the many, and we just don't know about it. How many school shootings have actually been prevented by the Holy Spirit intervening and stopping it before it happens? We don't know.