Romans 2:28-29

For the true Yehudi (Jew) is not the one [humanly] perceived as such, nor true milah that which is performed visibly in the flesh; The true Yehudi is so in [HASHEMʼs] hidden way, and true milah is of the lev, in the [hitkhadshut (renewal) of the] Ruach Hakodesh, not in [chumra (stringency, boasting of zokheh in machmir meritorious strict)] letter. He has y'hodeh (praise) that comes not from Bnei Adam but from HASHEM.