He would be born as God

"But as for you, Bethlehem Ephrathah, Too little to be among the clans of Judah, From you One will go forth for Me to be ruler in Israel. His goings forth are from long ago, From the days of eternity."

(Micah 5:2)

For a child will be born to us, a son will be given to us; And the government will rest on His shoulders; And His name will be called Wonderful Counselor, Mighty God, Eternal Father, Prince of Peace.

(Isaiah 9:6)

"Therefore the Lord Himself will give you a sign: Behold, a virgin will be with child and bear a son, and she will call His name Immanuel.(God with us)

(Isaiah 7:14)

"I will surely tell of the decree of the LORD: He said to Me, 'You are My Son, Today I have begotten You.

(Psalms 2:7)