Romans 15:10 Meaning

8Now I say that Jesus Christ was a minister of the circumcision for the truth of God, to confirm the promises made unto the fathers:

9And that the Gentiles might glorify God for his mercy; as it is written, For this cause I will confess to thee among the Gentiles, and sing unto thy name.

10And again he saith, Rejoice, ye Gentiles, with his people.

11And again, Praise the Lord, all ye Gentiles; and laud him, all ye people.

12And again, Esaias saith, There shall be a root of Jesse, and he that shall rise to reign over the Gentiles; in him shall the Gentiles trust.