the son of Amminadab, the son of Aram, the son of Joram,{TR omits "the son of Joram"} the son of Hezron, the son of Perez, the son of Judah,

 To Luke the emergence of John the Baptist was one of the hinges on which history turned. So much so is that the case that he dates it in no fewer than six different ways. 