Now I say that Jesus Christ was a minister of the circumcision for the truth of God, to confirm the promises made unto the fathers:
All Commentaries on Romans 15:8 Go To Romans 15
John Chrysostom
AD 407
When Paul says that “Christ became a servant to the circumcised” he means that by coming to fulfill the law, by being circumcised and born of the seed of Abraham, Christ undid the curse, held back God’s wrath and made those who were meant to obtain the promises fit to receive them. … It was because you had transgressed the law that Christ came to fulfill it, not so that you might then keep it but so that he might confirm to you the promises which were made to the fathers, which the law had caused to be suspended because you offended and were unworthy of the promise.