I was just thinking about Isreal in the Wilderness for 40 years.  Lifespans were not that long then.  If I was a kid who had been born in the wilderness I probably would have thought God was not real.  As an adult I would have left Moses (he must be lost wandering in circles for 40 years) and gone to join another tribe.  They did grumble "why did you not leave us in Egypt....the slavery was better than this"  Yet the slavery was not.  They had to work seven days a week, they were starving and they were beaten and humiliated.