zound: I didn't study this lesson in depth (I didn't do the reading and activities), but it sort of looked more like a redemption message to me. Maybe I'm just not seeing it clearly.
It didn't stand out, as much as the dot-to-dot horror coloring pages in other lessons (like the story of Solomon cutting the baby in half, and Lot's wife with a terrorized look on her face).
That said, I find just about all the children's lessons to be creepy and off the wall. I do let my kids look at them with me, and we discuss what is right and wrong in them and the way the material is presented.