The Messiah would be God's servant.
OT Prophecy NT Fulfillment
Isaiah 49:6a
"And he said, It is a light thing that thou shouldest be my servant to raise up the tribes of Jacob, and to restore the preserved of Israel: I will also give thee for a light to the Gentiles, that thou mayest be my salvation unto the end of the earth."
John 12:49–50
[49] For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak.
[50] And I know that his commandment is life everlasting: whatsoever I speak therefore, even as the Father said unto me, so I speak.
Tanakh – Neviim – Isaiah 49:6a
"Yea, He saith: 'It is too light a thing that thou shouldest be My servant to raise up the tribes of Jacob, and to restore the offspring of Israel; I will also give thee for a light of the nations, that My salvation may be unto the end of the earth.'"
Hebrew OT – Isaiah 49:6a
[49:6] וַיֹּאמֶר נָקֵל מִהְיוֹתְךָ לִי עֶבֶד
לְהָקִים אֶת־שִׁבְטֵי יַעֲקֹב
וּנְצוּרֵי יִשְׂרָאֵל לְהָשִׁיב
וּנְתַתִּיךָ לְאוֹר גּוֹיִם
לִהְיוֹת יְשׁוּעָתִי עַד־קְצֵה הָאָרֶץ