No, the Old Testament prophecies show that the Messiah (Christ) has to be a descendant of David.
Yes, that's right, it does. say that the Messiah shall descend from David. Why then does David call him Lord and Paul call him God?
Matthew 22:41-46 KJV
(41) While the Pharisees were gathered together, Jesus asked them,
(42) Saying, What think ye of Christ? whose son is he? They say unto him, The Son of David.
(43) He saith unto them, How then doth David in spirit call him Lord, saying,
(44) The LORD said unto my Lord, Sit thou on my right hand, till I make thine enemies thy footstool?
(45)
If David then call him Lord, how is he his son?
(46) And no man was able to answer him a word, neither durst any man from that day forth ask him any more questions.
Mark 12:35-37 KJV
(35) And Jesus answered and said, while he taught in the temple, How say the scribes that Christ is the Son of David?
(36) For David himself said by the Holy Ghost, The LORD said to my Lord, Sit thou on my right hand, till I make thine enemies thy footstool.
(37)
David therefore himself calleth him Lord; and whence is he then his son? And the common people heard him gladly.
Luke 20:41-44 KJV
(41) And he said unto them, How say they that Christ is David's son?
(42) And David himself saith in the book of Psalms, The LORD said unto my Lord, Sit thou on my right hand,
(43) Till I make thine enemies thy footstool.
(44)
David therefore calleth him Lord, how is he then his son?
Hebrews 1:1-14 KJV
(1) God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets,
(2) Hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds;
(3) Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high;
(4)
Being made so much better than the angels, as he hath by inheritance obtained a more excellent name than they.
(5)
For unto which of the angels said he at any time, Thou art my Son, this day have I begotten thee? And again, I will be to him a Father, and he shall be to me a Son?
(6) And again, when he bringeth in the firstbegotten into the world, he saith,
And let all the angels of God worship him.
(7) And of the angels he saith, Who maketh his angels spirits, and his ministers a flame of fire.
(8)
But unto the Son he saith, Thy throne, O God, is for ever and ever: a sceptre of righteousness is the sceptre of thy kingdom.
(9) Thou hast loved righteousness, and hated iniquity; therefore God, even thy God, hath anointed thee with the oil of gladness above thy fellows.
(10) And, Thou, Lord, in the beginning hast laid the foundation of the earth; and the heavens are the works of thine hands:
(11) They shall perish; but thou remainest; and they all shall wax old as doth a garment;
(12) And as a vesture shalt thou fold them up, and they shall be changed: but thou art the same, and thy years shall not fail.
(13)
But to which of the angels said he at any time, Sit on my right hand, until I make thine enemies thy footstool?
(14) Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?
He inherits a name better than the angels, the angels of God worship him. The same angels that say "See that thou do it not, worship God." (Revelation 19:10, 22:9) And to the Son he saith, thy throne, O God, is for ever and ever.
I didn't mean to go in that direction yet (my mind slipped when I wrote that before) but it's interesting that even that question brings us back in that same direction. It's integrated practically everywhere.