Romans 15:8-9

8For I tell you that Christ has become a servant of the Jews Greek circumcision on behalf of God’s truth, so that the promises made to the patriarchs might be confirmed

9and, moreover, that the Gentiles might glorify God for his mercy. As it is written: “Therefore I will praise you among the Gentiles; I will sing the praises of your name.” 2 Samuel 22:50; Psalm 18:49