And I will put enmity between thee and the woman, and between thy seed and HER seed

[beameup]

And I will put enmity between thee [Satan] and the woman [Eve],
and between thy seed and her seed; it shall bruise thy head
[fatal wound], and thou shalt bruise his heel. - Genesis 3:15

God establishes from the beginning that Messiah would come from the SEED of the woman.

Due to the blood-curse of Jeconiah upon the line of David, it seemed impossible to fulfill the prophecy. But by "adoption" to Joseph by marriage to Mary, Jesus bypassed this eternal curse on the house of David and was qualified to be King- Jeremiah 22:24, 30.
Being eternal, Jesus can reign eternally on the Throne of David.

The LORD hath sworn in truth unto David; he will not turn from it; Of the fruit of thy body will I set upon thy throne.

 

[beameup]

Upon DAVID, and upon his SEED,
and upon his HOUSE, and upon his THRONE,
shall there be peace forever from the LORD. - 1 Kings 2:33b

Clearly, God established from the very beginning,
that the SEED of the WOMAN would defeat Satan
and bring about eternal peace.