Galatians 2:14

But when I saw that they didn't walk uprightly according to the truth of the Good News, I said to Peter before them all, "If you, being a Jew, live as the Gentiles do, and not as the Jews do, why do you compel the Gentiles to live as the Jews do?

Galatians 2:5

to whom we gave no place in the way of subjection, not for an hour, that the truth of the Good News might continue with you.

Acts 10:28

He said to them, "You yourselves know how it is an unlawful thing for a man who is a Jew to join himself or come to one of another nation, but God has shown me that I shouldn't call any man unholy or unclean.

1 Timothy 5:20

Those who sin, reprove in the sight of all, that the rest also may be in fear.

Leviticus 19:17

"'You shall not hate your brother in your heart. You shall surely rebuke your neighbor, and not bear sin because of him.

Psalm 15:2

He who walks blamelessly does what is right, and speaks truth in his heart;

Psalm 58:1

Do you indeed speak righteousness, silent ones? Do you judge blamelessly, you sons of men?

Psalm 84:11

For Yahweh God is a sun and a shield. Yahweh will give grace and glory. He withholds no good thing from those who walk blamelessly.

Psalm 141:5

Let the righteous strike me, it is kindness; let him reprove me, it is like oil on the head; don't let my head refuse it; Yet my prayer is always against evil deeds.

Proverbs 2:7

He lays up sound wisdom for the upright. He is a shield to those who walk in integrity;

Proverbs 10:9

He who walks blamelessly walks surely, but he who perverts his ways will be found out.

Proverbs 27:5-6

Better is open rebuke than hidden love.

Acts 11:3-18

saying, "You went in to uncircumcised men, and ate with them!"

Acts 15:10-11

Now therefore why do you tempt God, that you should put a yoke on the neck of the disciples which neither our fathers nor we were able to bear?

Acts 15:19-21

"Therefore my judgment is that we don't trouble those from among the Gentiles who turn to God,

Acts 15:24

Because we have heard that some who went out from us have troubled you with words, unsettling your souls, saying, 'You must be circumcised and keep the law,' to whom we gave no commandment;

Acts 15:28-29

For it seemed good to the Holy Spirit, and to us, to lay no greater burden on you than these necessary things:

Romans 14:14

I know, and am persuaded in the Lord Jesus, that nothing is unclean of itself; except that to him who considers anything to be unclean, to him it is unclean.

Galatians 2:3

But not even Titus, who was with me, being a Greek, was compelled to be circumcised.

Galatians 2:7

but to the contrary, when they saw that I had been entrusted with the Good News for the uncircumcision, even as Peter with the Good News for the circumcision

Galatians 2:9

and when they perceived the grace that was given to me, James and Cephas and John, they who were reputed to be 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 resisted him to his face, because he stood condemned.

Galatians 6:12

As many as desire to look good in the flesh, they compel you to be circumcised; only that they may not be persecuted for the cross of Christ.

1 Timothy 4:3-5

forbidding marriage and commanding to abstain from foods which God created to be received with thanksgiving by those who believe and know the truth.

Hebrews 9:10

being only (with meats and drinks and various washings) fleshly ordinances, imposed until a time of reformation.

Hebrews 12:13

and make straight paths for your feet, so that which is lame may not be dislocated, but 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?

Bible References

Walked

Psalm 15:2
He who walks blamelessly does what is right, and speaks truth in his heart;
Psalm 58:1
Do you indeed speak righteousness, silent ones? Do you judge blamelessly, you sons of men?
Psalm 84:11
For Yahweh God is a sun and a shield. Yahweh will give grace and glory. He withholds no good thing from those who walk blamelessly.
Proverbs 2:7
He lays up sound wisdom for the upright. He is a shield to those who walk in integrity;
Proverbs 10:9
He who walks blamelessly walks surely, but he who perverts his ways will be found out.

The truth

Galatians 2:5
to whom we gave no place in the way of subjection, not for an hour, that the truth of the Good News might continue with you.
Romans 14:14
I know, and am persuaded in the Lord Jesus, that nothing is unclean of itself; except that to him who considers anything to be unclean, to him it is unclean.
1 Timothy 4:3
forbidding marriage and commanding to abstain from foods which God created to be received with thanksgiving by those who believe and know the truth.
Hebrews 9:10
being only (with meats and drinks and various washings) fleshly ordinances, imposed until a time of reformation.

I said

Galatians 2:11
But when Peter came to Antioch, I resisted him to his face, because he stood condemned.
Leviticus 19:17
"'You shall not hate your brother in your heart. You shall surely rebuke your neighbor, and not bear sin because of him.
Psalm 141:5
Let the righteous strike me, it is kindness; let him reprove me, it is like oil on the head; don't let my head refuse it; Yet my prayer is always against evil deeds.
Proverbs 27:5
Better is open rebuke than hidden love.
1 Timothy 5:20
Those who sin, reprove in the sight of all, that the rest also may be in fear.

If thou

Galatians 2:12
For before some people came from James, he ate with the Gentiles. But when they came, he drew back and separated himself, fearing those who were of the circumcision.
Acts 10:28
He said to them, "You yourselves know how it is an unlawful thing for a man who is a Jew to join himself or come to one of another nation, but God has shown me that I shouldn't call any man unholy or unclean.
Acts 11:3
saying, "You went in to uncircumcised men, and ate with them!"

Why

Galatians 2:3
But not even Titus, who was with me, being a Greek, was compelled to be circumcised.
Galatians 6:12
As many as desire to look good in the flesh, they 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 tempt God, that you should put a yoke on the neck of the disciples which neither our fathers nor we were able to bear?

General references

Proverbs 27:5
Better is open rebuke than hidden love.
Luke 5:38
But new wine must be put into fresh wineskins, and both are preserved.
Romans 3:30
since indeed there is one God who will justify the circumcised by faith, and the uncircumcised through faith.
Galatians 2:18
For if I build up again those things which I destroyed, I prove myself a law-breaker.