'Of the Circumcision' in the Bible

but, on the contrary, seeing that the glad tidings of the uncircumcision were confided to me, even as to Peter that of the circumcision,

(for he that wrought in Peter for the apostleship of the circumcision wrought also in me towards the Gentiles,)

for before that certain came from James, he ate with those of the nations; but when they came, he drew back and separated himself, fearing those of the circumcision;