Moses and the people were in the desert, but what was he going to do with them? They had to be fed, and feeding 2 to 3 million people requires a lot of food.
The people needed 2,000 tons -- four million pounds -- of food each day.
To bring that much food each day, would require three freight trains each a mile long!
In the desert they needed firewood to cook and keep warm. Each day this would take 4,000 tons -- eight million pounds -- of wood and a few more freight trains, each a mile long.
Of course, they needed water. If they only had enough to drink and wash a few dishes, it would take 11 million gallons each day, and a freight train with tank cars 1,800 miles long, just to bring water!
And then another thing: They had to get across the Red Sea in one night. If they went on a narrow path, double file, the line would be 800 miles long and would require 35 days and nights to get through.
So, there had to be an opening in the Red Sea, 3 miles long so that they could walk 5,000 abreast to get over in one night.
Each time they camped at the end of the day, they needed a campground two-thirds the size of the State of Rhode Island, about 750 square miles.
They journeyed in the desert forty years.
Do you think Moses worked all this out before he left Egypt?