The early Jews had been exiled and lived in so many different countries. Though the Jews lived in so many different countries they never forgot about their religion. Being exiled brought the Jews and their religion to so many different places in the world. They would also get people who weren't to convert to Judaism. People saw how the Jews lived and they learning about their culture. But what really helped, was the Jews was having a ton children. When the Jews had children, their children automatically become Jews and that caused the increase in the population of Judaism.