Galatians 6:13

Indeed, the very men who let themselves be circumcised do not themselves observe the law. But they simply want you to let yourselves be circumcised, so that they can boast of you as members of their party.

Matthew 23:3

So everything they tell you, do and practice, but stop doing what they do, for they preach but do not practice.

Matthew 23:15

A curse on you, you hypocritical scribes and Pharisees! For you scour land and sea to win a single convert, and when he is won you make him twice as fit for the pit as you are.

Matthew 23:23

"A curse on you, you hypocritical scribes and Pharisees! For you pay tithes on mint and dill and cummin, and yet leave out the more vital matters of the law, justice, love and fidelity. These latter especially you ought to have done, but ought not to have left out the former.

Romans 2:17-25

Now if you call yourself a Jew, and rely on law, and boast about God,

Romans 3:9-19

What is our conclusion then? Is it that we Jews are better than they? Not at all! For we have already charged that Jews and Greeks alike are all under the sway of sin,

1 Corinthians 3:21

So let no one boast in men. For everything belongs to you --

1 Corinthians 5:6

Your ground for boasting about such a case is not good. Are you not aware that a little yeast will change the whole lump of dough?

2 Corinthians 11:18

Since many boast in accordance with their human nature, I will do it too.

Philippians 3:3

For we are the true circumcision, who by the Spirit of God worship Him, who take pride in Christ Jesus only, and do not rely on outward privileges,

2 Peter 2:19

promising them freedom, though they are slaves of destruction themselves; for a man is the slave of anything that conquers him.

Treasury of Scripture Knowledge

Summary

For neither they themselves who are circumcised keep the law; but desire to have you circumcised, that they may glory in your flesh.

Bible References

Keep

Matthew 23:3
So everything they tell you, do and practice, but stop doing what they do, for they preach but do not practice.
Romans 2:17
Now if you call yourself a Jew, and rely on law, and boast about God,
Romans 3:9
What is our conclusion then? Is it that we Jews are better than they? Not at all! For we have already charged that Jews and Greeks alike are all under the sway of sin,
2 Peter 2:19
promising them freedom, though they are slaves of destruction themselves; for a man is the slave of anything that conquers him.

That they may

1 Corinthians 3:21
So let no one boast in men. For everything belongs to you --
1 Corinthians 5:6
Your ground for boasting about such a case is not good. Are you not aware that a little yeast will change the whole lump of dough?
2 Corinthians 11:18
Since many boast in accordance with their human nature, I will do it too.

General references

Matthew 23:4
They tie up heavy burdens and fasten them on men's shoulders, but they refuse to lift a finger to help bear them.
Luke 5:38
But fresh wine must be put into new bottles.
1 Corinthians 1:31
so that, as the Scripture says, "Let him who boasts boast in the Lord."
2 Corinthians 10:17
"But the man who boasts must boast in the Lord.