The Messiah would be a light to the Gentiles.
OT Prophecy NT Fulfillment
Isaiah 42:6d
[6] I the LORD have called thee in righteousness, and will hold thine hand, and will keep thee, and give thee for a covenant of the people, for a light of the Gentiles.
John 8:12
Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life.
Tanakh – Neviim – Isaiah 42:6d
[42:6] I HaShem have called thee in righteousness, and have taken hold of thy hand, and kept thee, and set thee for a covenant of the people, for a light of the nations.
Hebrew OT – Isaiah 42:6d
[42:6] אֲנִי יְהוָה קְרָאתִיךָ בְצֶדֶק
וְאַחְזֵק בְּיָדֶךָ
וְאֶצָּרְךָ
וְאֶתְּנָךָ לִבְרִית עָם
לְאוֹר גּוֹיִם