Galatians 2:14

But when I saw that they walked not correctly, according to the truth of the gospel, I said to Peter before all, If you being a Jew live after the manner of the gentiles, and not after the manner of the Jews, why do you compel the gentiles to practise Judaism?

Galatians 2:5

we did not yield to them by subjection, for an hour, that the truth of the gospel might continue with you.

Acts 10:28

and he said to them, You know that it is not lawful for a Jew to associate with a man of another nation, or come into his house; and God has taught me not to call any man common or impure;

1 Timothy 5:20

Those that sin, rebuke before all, that others also may fear.

Acts 11:3-18

saying, You went in to men that were uncircumcised, and eat with them.

Acts 15:10-11

Now, therefore, why do you try God, to put on the necks of the disciples a yoke which neither our fathers nor we could bear?

Acts 15:19-21

Wherefore I judge that we ought not to trouble those who turned to God from the gentiles,

Acts 15:24

Since we heard that some going out from us have troubled you with words subverting your souls, to whom we gave no charge,

Acts 15:28-29

For it seemed good to the Holy Spirit, and to us, to put no greater burden upon you except these necessary things;

Romans 14:14

I know, and am persuaded in the Lord Jesus, that nothing is defiled in itself, except to him that thinks any thing to be defiled; to him it is defiled.

Galatians 2:3

But Titus who was with me, and was a Greek, was not compelled to be circumcised;

Galatians 2:7

but on the contrary seeing that I was intrusted with the gospel of the uncircumcision, as Peter was of the circumcision,??8 for he that operated in Peter for the apostleship of the circumcision, operated also in me for the gentiles,??9 and knowing the grace given me, James and Cephas and John, who were manifest pillars, gave to me and Barnabas the right hand of fellowship that we should go to the gentiles and they to the circumcision;

Galatians 2:11-13

But when Peter came to Antioch I opposed him to his face, because he was to blame.

Galatians 6:12

Those who wish to make a fair appearance in the flesh compel you to be circumcised, only that they may not be persecuted for the cross of Christ.

1 Timothy 4:3-5

who forbid to marry, [command] to abstain from meat, which God created to be received with thanksgiving by the faithful and those who know the truth.

Hebrews 9:10

only in meats and drinks and different baptisms, and external ordinances, imposed till the time of reformation.

Hebrews 12:13

and make straight courses for your feet, that the lame may not be turned out of the way, but may rather be healed.

Treasury of Scripture Knowledge

Summary

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?

General references

Bible References

The truth

Galatians 2:5
we did not yield to them by subjection, for an hour, that the truth of the gospel might continue with you.
Romans 14:14
I know, and am persuaded in the Lord Jesus, that nothing is defiled in itself, except to him that thinks any thing to be defiled; to him it is defiled.
1 Timothy 4:3
who forbid to marry, [command] to abstain from meat, which God created to be received with thanksgiving by the faithful and those who know the truth.
Hebrews 9:10
only in meats and drinks and different baptisms, and external ordinances, imposed till the time of reformation.

I said

Galatians 2:11
But when Peter came to Antioch I opposed him to his face, because he was to blame.
1 Timothy 5:20
Those that sin, rebuke before all, that others also may fear.

If thou

Galatians 2:12
For before some came from James he eat with the gentiles; but when they came, he withdrew and separated himself; fearing those of the circumcision;
Acts 10:28
and he said to them, You know that it is not lawful for a Jew to associate with a man of another nation, or come into his house; and God has taught me not to call any man common or impure;
Acts 11:3
saying, You went in to men that were uncircumcised, and eat with them.

Why

Galatians 2:3
But Titus who was with me, and was a Greek, was not compelled to be circumcised;
Galatians 6:12
Those who wish to make a fair appearance in the flesh compel you to be circumcised, only that they may not be persecuted for the cross of Christ.
Acts 15:10
Now, therefore, why do you try God, to put on the necks of the disciples a yoke which neither our fathers nor we could bear?

General references

Luke 5:38
But new wine must be put into new bottles.
Romans 3:30
since there is one God who will justify the circumcision by faith and the uncircumcision through the [same] faith.
Galatians 2:18
For if I build up again what I have destroyed, I make myself a transgressor.