“Ram became the father of Amminadab. Amminadab became the father of Nahshon, prince of the sons of Judah. Nahshon became the father of Salma. Salma became the father of Boaz. Boaz became the father of Obed. Obed became the father of Jesse. Jesse became the father of Eliab his first-born, Abinadab the second, Shimea the third, Nethanel the fourth, Raddai the fifth, Ozem the sixth, and David the seventh. Their sisters were Zeruiah and Abigail. The sons of Zeruiah were Abishai, Joab, and Asahel, three. Abigail bore Amasa. The father of Amasa was Jether the Ishmaelite.”
This is how we get from Judah to David with the same genealogy that was at the end of Ruth, chapter 4, which will be picked up by the Gospel of Matthew, chapter 1. Perhaps these documents are contemporary since the genealogy at the end of Ruth seems to be an addition to the story. All this is heading, to King David, who was from the tribe of Judah. (1) Judah had a son (2) Perez who in turn had a son (3) Hezron. His son (4) Ram had a son named (5) Amminadab, whose daughter Elisheba married Aaron, the brother of Moses in Exodus, chapter 6. However, Amminadab’s son (6) Nahshon was a famous warrior prince of Judah, especially in Numbers, chapter 7. His son (7) Salma, or as he is called in Ruth, Salmon, was the father of (8) Boaz who married Ruth. He then had a son called (9) Obed. Obed’s son was (10) Jesse. Jesse had 7 sons and 2 daughters, Eliab, Abinadab, Shimea, Nethanel, Raddai, Ozem, Zeruiah, and Abigail, with the 7th son being (11) David. This biblical author also lists 4 children of the 2 daughters Abishai, Joab, Asahel, and Amasa, since they played an important role in the reign of King David.