There is 24 million square miles of habitable land not including mountainous and desert regions. Subtracting Canada and Russia which are too cold leaves us with 14 million square miles. The heavenly Jerusalem city is 2 million square miles 1380×1380 square feet, 12000 stadia. 12000 stadia stands for the 12 million people who will be saved and live forever. 12,144,000 people live forever as humans only. Billions of people perished by marrying their cousins in past lifetimes, they are not here, and they will disappear. We get about 25,000 square feet of space each, we can have 10,000 square feet of space on the ground floor. If a house is more than one story that ground floor of the house is used to be a church mediation room music room movie room or video game room and so are the ground floors of apartments but if a house is one story people may own it. We live in the apartments on the second floor and up and we can live in the second floor and up of houses.