The same observations would apply to Jesus, although we'll never know if he really had children. But let's assume that he did, and that he also had a lower than average number of descendants — say 500 in the year AD 250. Where would they have lived? Those centuries were a time of great ferment in the Roman Empire. Although most of Jesus' descendants probably would have lived in the Middle East, at least a few would have moved as far away as modern-day Italy and central Asia (whether as soldiers, traders or slaves).
Many of these individuals also would have had 500 to 1,000 descendants 250 years later. And these tens of thousands of descendants of Jesus likely would have been scattered along trade routes from western Europe to southern Africa to eastern Asia. After another 250 years, Jesus would have had millions of descendants. Repeat that cycle five more times and the whole world begins to fill up with descendants of Jesus.
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