Today, for many of us, light is easy - flick a switch, pay your bills. We don't have to think much about it or even know much about where it comes from; for the right fee, we can have it on demand. But for most of human history, that's not how it worked. Light was fire you had to make happen, plan for, protect, and nurture. Light was hard work, then - which made it a lot more like real faith, and real life.