Galatians 5:11

But I, brethren, if I still preach circumcision, why am I still persecuted? then hath the stumbling-block of the cross been done away. [It is evident that in this verse Paul defends himself against the charge of having taught the necessity of circumcision by having circumcised Timothy. His answer is that false brethren might misconstrue his act for the purpose of founding false teaching upon it, but that the Jews, the real parties in interest, placed a truer construction upon the act, for they still continued to persecute him as an enemy to circumcision. If Paul had preached circumcision, the stumbling-block of the cross would have been done away. Paul taught that the whole Jewish system of ordinances perished at the cross, and that on the cross Jesus made the one and only atonement for sin. Such teaching was a stumbling-block to the Jews. Had Paul rejected the doctrine of the cross and preached circumcision, as these Judaizers contended that he did when they wished to countenance their errors with his authority, he would have been a hero among the Jews.]