For circumcision verily profits, if you keep the law: but if you are a breaker of the law, your circumcision is made uncircumcision.
All Commentaries on Romans 2:25 Go To Romans 2
Ambrosiaster
AD 400
An opponent might say: “If circumcision is of value, why was it stopped?” It is only of value if you keep the law. Circumcision may be retained therefore, but if it is to be of any value the law must be observed. So why did Paul prohibit what he shows to be of value if the law is observed? Paul answers by saying that if the law is not kept, the Jew effectively becomes a Gentile…. But to keep the law is to believe in Christ, who was promised to Abraham. Those who are justified by faith have their own merit and are included in the honor shown to the patriarchs. For every mention of salvation in the law refers to Christ. Therefore the man who believes in Christ is the man who keeps the law. But if he does not believe then he is a transgressor of the law because he has not accepted Christ … and it is no advantage for him to be called a son of Abraham. Commentary on Paul’s Epistles.
