The Messiah would be the Son of God.
OT Prophecy NT Fulfillment
2 Samuel 7:13-14
[13] He shall build an house for my name, and I will stablish the throne of his kingdom for ever.
[14] I will be his father, and he shall be my son. If he commit iniquity, I will chasten him with the rod of men, and with the stripes of the children of men.
Matthew 3:16-17
[16] And Jesus, when he was baptized, went up straightway out of the water: and, lo, the heavens were opened unto him, and he saw the Spirit of God descending like a dove, and lighting upon him:
[17] And lo a voice from heaven, saying, This is my beloved Son, in whom I am well pleased.
Tanakh – Neviim – 2 Samuel 7:13-14
[13] He shall build a house for My name, and I will establish the throne of his kingdom for ever.
[14] I will be to him for a father, and he shall be to Me for a son; if he commit iniquity, I will chasten him with the rod of men, and with the stripes of the children of men.
Hebrew OT – 2 Samuel 7:13-14
[13] הוּא יִבְנֶה־בַּיִת לִשְׁמִי וְכֹנַנְתִּי אֶת־כִּסֵּא מַמְלַכְתּוֹ עַד־עוֹלָם
[14] אֲנִי אֶהְיֶה־לּוֹ לְאָב וְהוּא יִהְיֶה־לִּי לְבֵן אֲשֶׁר בְּהַעֲוֹתוֹ וְהֹכַחְתִּיו בְּשֵׁבֶט אֲנָשִׁים
וּבְנִגְעֵי בְּנֵי אָדָם