and the Holy Spirit descended in a bodily form as a dove on him; and a voice came out of the sky, saying "You are my beloved Son. In you I am well pleased."

 Here we have Luke's genealogy of Jesus. The Jews were interested in genealogies. Genealogies, especially of the priests, who had to prove unbroken descent from Aaron, were kept amongst the public records. In the time of Ezra and Nehemiah we read of priests who lost their office because they could not produce their genealogy ( Ezra 2:61-63; Nehemiah 7:63-65). 