Scholars and historians estimated that building the 4.5-mile wall around Jerusalem (the city of David and temple mount) should have taken over a year with the size of their labor force. Historical records suggest it was about 12-25 feet high and 6-8 feet thick in most sections. Modern construction estimate with today's equipment (excavators, bulldozers, concrete mixers, cranes) and materials (reinforced concrete instead of stone), a similar defensive wall could likely be constructed in 4-8 weeks with a dedicated crew of 50-100 skilled workers. The remarkable aspect to highlight is that with ancient tools, limited technology, and facing opposition, the wall was completed in just 52 days - which historians consider miraculous since it should have taken over a year. This contrast between what was naturally possible then versus what actually happened is central to the point about God's intervention in the rebuilding project.