The Messiah would come for all people.
OT Prophecy NT Fulfillment
Psalm 18:49
Therefore will I give thanks unto thee, O LORD, among the heathen, and sing praises unto thy name.
Ephesians 3:4–6
[4] Whereby, when ye read, ye may understand my knowledge in the mystery of Christ)
[5] Which in other ages was not made known unto the sons of men, as it is now revealed unto his holy apostles and prophets by the Spirit;
[6] That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel.
Tanakh – Ketuvim – Psalms 18:50
Therefore I will give thanks unto Thee, O HaShem, among the nations, and will sing praises unto Thy name.
Hebrew OT – Psalms 18:49
[18:49] עַל־כֵּן אוֹדְךָ בַגּוֹיִם יְהוָה
וּלְשִׁמְךָ אֲזַמֵּר