Galatians 5:2

Look! I, Paul, tell you that if you become circumcised, Christ will profit you nothing!

Acts 15:1

And some men came down from Judea [and] began teaching the brothers, "Unless you are circumcised according to the custom [prescribed] by Moses, you cannot be saved."

2 Corinthians 10:1

Now I, Paul, appeal to you myself by the humility and gentleness of Christ, who {when I am present in person} [am] humble among you, but [when I] am absent am bold toward you--

Galatians 5:6

For in Christ Jesus neither circumcision counts for anything nor uncircumcision, but faith working through love.

Acts 15:24

Because we have heard that some have gone out from among us--to whom we gave no orders--[and] have thrown you into confusion by words upsetting your {minds},

Acts 16:3-4

Paul wanted this one to go with him, and he took [him] [and] circumcised him because of the Jews who were in those places, for [they] all knew that his father was Greek.

Romans 9:31-32

But Israel, pursuing the law of righteousness, did not attain to the law.

Romans 10:2-3

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

Galatians 2:3-5

But not even Titus [who was] with me, [although] he was a Greek, was compelled to be circumcised.

Galatians 5:3-4

And again I testify to every man who becomes circumcised, that he is under obligation to keep the whole law.

Galatians 5:11

Now, brothers, if I am still preaching circumcision, why am I still being persecuted? In that case the stumbling block of the cross has been abolished.

1 Thessalonians 2:18

because we wanted to come to you--I, Paul, {on more than one occasion}--and Satan hindered us.

Hebrews 4:2

{For we also have had the good news proclaimed to us}, just as those also [did], but the message {they heard} did not benefit them, [because they] were not united with those who heard [it] in faith.

1 Corinthians 16:21

The greeting [is] by my hand--Paul's.

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 wineskins.
Galatians 2:3
But not even Titus [who was] with me, [although] he was a Greek, was compelled to be circumcised.
Philippians 3:7
But whatever [things] were gain to me, these [things] I have considered loss because of Christ.