The man-god doctrine doesn't allow the Biblical text to make any sense. Theories and confusion into perpetuity then. Dead leaven that rises not.
The tribe/kingship is through the father: direct lineage, y chromosome (funny how that one alone, the little one, marks a straight path). Judah ---> David ---> Joseph ("son of David") ---> Messiah ("son of David")
Mat 1:1 is the genesis of Christ Jesus, son of David, son of Abraham: the "begats" [Matthew] come down through Solomon. Joseph didn't become Jesus' father through the regular begetting process, so no "begat" with his name. Why the "IVF" through the Holy Spirit?
Luke 1:34-35 Then said Mary unto the angel, How shall this be, seeing I know not a man? 35 And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.
Luke's genealogy goes in reverse - no physical begetting at all ('sons' is added there anyway) - all the way back to Adam, "[son] of God".
Son of man (Matthew); son of God (Luke); son from heaven; son from earth
1 Corinthians 15:45-50
45 And so it is written, The first man Adam was made a living soul; the last Adam was made a quickening spirit.
46 Howbeit that was not first which is spiritual, but that which is natural; and afterward that which is spiritual.
47 The first man is of the earth, earthy: the second man is the Lord from heaven.
48 As is the earthy, such are they also that are earthy: and as is the heavenly, such are they also that are heavenly.
49 And as we have borne the image of the earthy, we shall also bear the image of the heavenly.
50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption.
As long as the Mary-go-round keeps people entertained, they won't see any reason to jump off.
Meanwhile, discussions about two lineages, (trees, family trees) and the different fruit they produce (spiritual vs. physical) appear all over the texts.
What would Gabriel have to say? :-/
It makes sense to me. I think the evidence is there, though maybe not in the KJV. Maybe on this one, we can only agree to disagree. :)