1 Then what is the Jew's superiority? What is the good of circumcision?
Romans 3:1 Cross References - Moffatt
Romans 2:25-29
25 Circumcision is certainly of use, provided you keep the Law; but if you are a breaker of the Law, then your circumcision is turned into uncircumcision.
26 (If then the uncircumcised observe the requirements of the Law, shall not their uncircumcision be reckoned equivalent to circumcision?
27 And shall not those who are physically uncircumcised and who fulfil the Law, judge you who are a breaker of the Law for all your written code and circumcision?)
28 He is no Jew who is merely a Jew outwardly, nor is circumcision something outward in the flesh;
29 he is a Jew who is one inwardly, and circumcision is a matter of the heart, spiritual not literal — praised by God, not by man.
1 Corinthians 15:32
32 What would it avail me that, humanly speaking, I 'fought with wild beasts' at Ephesus? If dead men do not rise, let us eat and drink, for we will be dead to-morrow!
Hebrews 13:9
9 Never let yourselves be carried away with a variety of novel doctrines; for the right thing is to have one's heart strengthened by grace, not by the eating of food — that has never been any use to those who have had recourse to it.