Galatians 5:2

Behold, I Paul say unto you, If ye be circumcised, Christ shall profit you nothing.

Acts 15:1

But certain men coming down from Judea taught the brethren, Except ye be circumcised, after the manner of Moses, ye cannot be saved.

2 Corinthians 10:1

Now I Paul myself, who when present am base among you, but being absent am bold toward you, intreat you, by the meekness and gentleness of Christ,

Galatians 5:6

For in Christ Jesus neither circumcision availeth any thing, nor uncircumcision, but faith which worketh by love.

Acts 15:24

Forasmuch as we have heard, that some who came from us have troubled you with words, unsettling your minds, saying, Ye must be circumcised, and keep the law, whom we commanded not.

Acts 16:3-4

Him Paul would have to go forth with him; and he took and circumcised him, because of the Jews who were in those places; for they all knew his father, that he was a Greek.

Romans 9:31-32

But Israel following after the law of righteousness, hath not attained to the law of righteousness.

Romans 10:2-3

For I bear them record, that they have a zeal for God, but not according to knowledge.

Galatians 2:3-5

(But neither was Titus, who was with me,

Galatians 5:3-4

For I testify again to every man that is circumcised, he is a debtor to do the whole law.

Galatians 5:11

But if I, brethren, preach circumcision, why do I yet suffer persecution?

1 Thessalonians 2:18

Wherefore we would have come to you (even I Paul) once and again, but Satan hindered us.

Hebrews 4:2

For unto us hath the gospel been preached as well as unto them; but the word heard did not profit them, not being mixt with faith in those that heard it.

1 Corinthians 16:21

The Salutation of me Paul with my own hand. If any man love not the Lord Jesus Christ, let him be anathema: Maran-atha.

Treasury of Scripture Knowledge

Summary

Behold, I Paul say unto you, that if ye be circumcised, Christ shall profit you nothing.

Bible References

General references

Luke 5:38
But new wine must be put into new bottles, and both are preserved.
Galatians 2:3
(But neither was Titus, who was with me,
Philippians 3:7
But whatsoever things were gain to me, those I have accounted loss for Christ.