1. Moses was taking care of the flock of his father-in-law Jethro. Jethro was the priest of Midian. Moses led the flock to the western side of the desert. He came to Horeb. It was the mountain of God.
2. There the angel of the Lord appeared to him from inside a burning bush. Moses saw that the bush was on fire. But it didn't burn up.
3. So Moses thought, "I'll go over and see this strange sight. Why doesn't the bush burn up?"