Jesus himself, when he began to teach, was about thirty years old, being the son (as was supposed) of Joseph, the son of Heli,
(2) The solid evidence that supports this is in the Greek text itself, where the article "the" is omitted before the name of Joseph, and yet is found before all the names in the long list without exception, save for this solitary omission.  What does it mean?  Godet said: "The omission of the article puts the name (Joseph) outside of the genealogical series."[15] Robertson said, "This would indicate that `Joseph' belongs in the parenthesis ...  (it should) read thus, `being son (as supposed of Joseph) of Heli, etc.'"[16] Jesus was thus the grandson of Hell, "grandson" being an absolutely legitimate meaning of "son" as used in Jewish genealogies. As a matter of fact, the word "son" in such tables also had the meaning of "son by creation" (as in  Luke 3:38), and sometimes even "son-in-law."  It is the context that must determine the meaning.  In no case would the name of Mary have appeared in the direct line of such genealogies, being contrary to Jewish custom.  This necessitated the listing of Jesus as the "son (grandson) of Hell."  It certainly cannot be proved that this interpretation is incorrect.