Romans 15:8-11

For I say that Christ hath been made a minister of the circumcision for the truth of God, that he might confirm the promises given unto the fathers,

and that the Gentiles might glorify God for his mercy; as it is written, Therefore will I give praise unto thee among the Gentiles, And sing unto thy name.

And again he saith, Rejoice, ye Gentiles, with his people.