David, Solomon and Samuel are Bible heroes. They are associated with greatness, faith and success. But they also have something else in common. While successful men, they struggled with fatherhood. All three had sons who were disappointments. Yet, all three of these fathers should have been very familiar with a passage of Scripture the Jews call the Shema. In Deuteronomy 6:4-9, there are three principles of fatherhood that makes successful men successful fathers.