And the next best thing to a fire is a construction site. It is not just the fact that heavy equipment is doing heroic things with digging and lifting and moving earth. People are curious. Then come steel workers and masons and carpenters to give it shape and character. Subtle changes every day.
People just have to look.
But the deeper fascination of the burning bush is not that it is on fire, but that it is not consumed. But in fact his question will never be answered. The receptacle, so to speak, for God's revelation. It provides the framework for God's presence to be seen, for God's voice to be heard, for God's nature to be revealed and God's call to be issued. Where we, like Moses, bring our curiosity and our self-doubts, our misgivings about God's people and their readiness to hear.