because this is the covenant, which I will make with this house Israel after those days, says the L-rd (G-d): I will give my laws in their mind/thoughts, and on their heart will I them write; and will be their G-d, and they will be my people.
but a Jew is the one, who is inwardly such, and circumcision is in the heart according to Spirit, not according to the letter, whose praise is not from men, but from Hashem.