Galatians 5:2

Behold, I Paul say to you, that if ye be circumcised, Christ will profit you nothing.

Acts 15:1

And certain men who came down from Judea, taught the brethren, and said, Except ye be circumcised after the manner of Moses, ye cannot be saved.

2 Corinthians 10:1

Now I Paul myself beseech you, by the meekness and gentleness of Christ, who in presence am base among you, but being absent am bold towards you:

Galatians 5:6

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

Acts 15:24

Forasmuch as we have heard, that certain who went out from us, have troubled you with words, subverting your souls, saying, Ye must be circumcised, and keep the law; to whom we gave no such commandment:

Acts 16:3-4

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

Romans 9:31-32

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

Romans 10:2-3

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

Galatians 2:3-5

But neither Titus, who was with me, being a Greek, was compelled to be circumcised:

Galatians 5:3-4

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

Galatians 5:11

And I, brethren, if I yet preach circumcision, why do I yet suffer persecution? then hath the offense of the cross ceased.

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 to us was the gospel preached, as well as to them: but the word which they heard did not profit them, not being mixed with faith in them that heard it.

1 Corinthians 16:21

The salutation of me Paul with my own hand.

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 Titus, who was with me, being a Greek, was compelled to be circumcised:
Philippians 3:7
But what things were gain to me, those I counted loss for Christ.