if  you can take a clear look at the baptism of jesus you will discover that the baptism in its entirety has a clear indication that shows clearly that jesus is truly the son of GOD,holyspirit who is our comforter comfirm s it ,the dove declears it open ,many people were baptised that same day but the holyspirit comfirm it through the dove that mounted on jesus head declearing that THIS IS MY BELOVED SON IN WHOM IAM WELL PLEASED HEAR YE HIM .the bible confirm how jesus was born  and his earthly parents  but his birth was a divine birth and his genealogy is as a result of proving that his earthly parents is still here on earth  to prove the prophecy concerning the saviour that will be born in the house of joseph and he will be the saviour and he will save his people from the hand of their enemies and set them free from their boundage ,