1 Then fourteen years after I went up again to
  Jerusalem with Barnabas, and took Titus with me also.
   2 And I went up by revelation, and communicated unto
  them that gospel which I preach among the Gentiles,
  but privately to them which were of reputation, lest
  by any means I should run, or had run, in vain.
   3 But neither Titus, who was with me, being a Greek,
  was compelled to be circumcised:
   4 And that because of false brethren unawares
  brought in, who came in privily to spy out our
  liberty which we have in Christ Jesus, that they
  might bring us into bondage:
   5 To whom we gave place by subjection, no, not for
  an hour; that the truth of the gospel might continue
  with you.
   6 But of these who seemed to be somewhat,
  (whatsoever they were, it maketh no matter to me: God
  accepteth no man's person:) for they who seemed to be
  somewhat in conference added nothing to me:
   7 But contrariwise, when they saw that the gospel of
  the uncircumcision was committed unto me, as the
  gospel of the circumcision was unto Peter;
   8 (For he that wrought effectually in Peter to the
  apostleship of the circumcision, the same was mighty
  in me toward the Gentiles:)
   9 And when James, Cephas, and John, who seemed to be
  pillars, perceived the grace that was given unto me,
  they gave to me and Barnabas the right hands of
  fellowship; that we should go unto the heathen, and
  they unto the circumcision.
  10 Only they would that we should remember the poor;
  the same which I also was forward to do.
  11 But when Peter was come to Antioch, I withstood
  him to the face, because he was to be blamed.
  12 For before that certain came from James, he did
  eat with the Gentiles: but when they were come, he
  withdrew and separated himself, fearing them which
  were of the circumcision.
  13 And the other Jews dissembled likewise with him;
  insomuch that Barnabas also was carried away with
  their dissimulation.
  14 But when I saw that they walked not uprightly
  according to the truth of the gospel, I said unto
  Peter before them all, If thou, being a Jew, livest
  after the manner of Gentiles, and not as do the Jews,
  why compellest thou the Gentiles to live as do the
  Jews?
  15 We who are Jews by nature, and not sinners of the
  Gentiles,
  16 Knowing that a man is not justified by the works
  of the law, but by the faith of Jesus Christ, even we
  have believed in Jesus Christ, that we might be
  justified by the faith of Christ, and not by the
  works of the law: for by the works of the law shall
  no flesh be justified.
  17 But if, while we seek to be justified by Christ,
  we ourselves also are found sinners, is therefore
  Christ the minister of sin? God forbid.
  18 For if I build again the things which I destroyed,
  I make myself a transgressor.
  19 For I through the law am dead to the law, that I
  might live unto God.
  20 I am crucified with Christ: nevertheless I live;
  yet not I, but Christ liveth in me: and the life
  which I now live in the flesh I live by the faith of
  the Son of God, who loved me, and gave himself for
  me.
  21 I do not frustrate the grace of God: for if
  righteousness come by the law, then Christ is dead in
  vain.

...to Galatians chapter 3