Can someone explain the song "Three Wooden Crosses" to me?

I've tried looking it up and I found a few times when this question had already been asked. The problem is that every person who answered had a different answer. The moral itself was the same. Okay, so there are three crosses but there were four people? And one of those four was a hooker? There's a farmer, a preacher, a hooker, and a teacher. The preacher, the farmer, and the teacher died, I know that much. But what happened to the hooker? And how did the preacher give the Bible to the hooker if he had already died? Or perhaps the preacher was the hooker's son, in which how did he survive but the hooker didn't?