Matt 1:.24 Then Joseph being raised from sleep did as the angel of the Lord had bidden him, and took unto him his wife: 25 And knew her not till she had brought forth her firstborn son: and he called his name JESUS.
Luke 3:23 And Jesus himself began to be about thirty years of age, being (as was supposed) the son of Joseph, which was the son of Heli,
The chronologies recorded in scripture from both the man and woman established Jesus as rightful heir to the throne of David.. Matthew established the fact that Joseph agreed and gave his acceptance to this arrangement thus giving Jesus legal status to the throne. Luke added to this chronology by the women despite what others may have thought and included the whole human race. This gave Jesus the right to more than just David’s throne but the right and authority to redeem all mankind back to Adam and not just the Jews. Both chronologies also established the real humanity of Jesus, but such humanity would still produce a sinful human life. So John came along and appended further chronology to these two and said: 1 In the beginning was the Word, and the Word was with God, and the Word was God. 2 The same was in the beginning with God. 3 All things were made by him; and without him was not any thing made that was made. 4 In him was life; and the life was the light of men. So now we go back in time before Adam, before any of this chronology and learn how it came into existence. And now we learn the source of the life that made this Jesus different from than that of Adam being not only human but without sin. What this source was up to then was only known as the Holy Ghost but was now further identified as the Word, a sinless Being that was responsible for all humanity in the first place. It is this sinless life and its acceptance by both human parents that made the ransom of all of us possible.
Joseph