Galatians 6:13

For not even those who practice circumcision comply with [the requirements of] the law of Moses, yet they want you to be circumcised so they can take credit for this physical evidence [of your compliance with the law of Moses].

Matthew 23:3

Therefore, observe and practice everything they urge upon you, but do not follow their example [of living] because they say [the right things] but do not do them.

Matthew 23:15

"It is too bad for you hypocritical experts in the law of Moses and [you] Pharisees! For you travel over land and sea [in hope of] making one person a proselyte [i.e., a convert to the Jewish religion]. And when you do convert one, you make him twice as deserving of hell as yourselves.

Matthew 23:23

"It is too bad for you hypocritical experts in the law of Moses and [you] Pharisees! For you give a tenth of your mint, dill and cumin [i.e., small garden herbs used for seasoning or fragrance], and [yet] neglect the heavier responsibilities required by the law, [such as] justice, mercy and faith. You should have done these ["lighter"] things and not neglected to do the other ["heavier"] things [as well].

Romans 2:17-25

But if you call yourselves "Jews," and [claim to] rely on the law of Moses, and brag about [belonging to] God;

Romans 3:9-19

What then? Are we [Jews] any better off [than those Gentiles]? No, not at all, for we have already charged that both Jews and Greeks [i.e., Gentiles] alike are under [the power of] sin,

1 Corinthians 3:21

So, no one should boast about [the knowledge or position of] people. For all things belong to you,

1 Corinthians 5:6

Your boasting is not good. Do you not know that a little yeast can leaven the whole batch of dough?

2 Corinthians 11:18

Since many [other] people boast about worldly matters, I will boast about such things also.

Philippians 3:3

For we [Christians] are the [true] circumcision [i.e., the real "Jews" in God's eyes. See Rom. 2:28-29]. We worship by means of God's Holy Spirit [i.e., are empowered and motivated by the Holy Spirit], and boast in [the person and work of] Christ Jesus, and [we] place no confidence in the flesh [i.e., in any outward ritual or status for salvation].

2 Peter 2:19

[Although] these people promise "liberty," they themselves are slaves to corrupting influences, for people are slaves to whatever controls them.

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
Therefore, observe and practice everything they urge upon you, but do not follow their example [of living] because they say [the right things] but do not do them.
Romans 2:17
But if you call yourselves "Jews," and [claim to] rely on the law of Moses, and brag about [belonging to] God;
Romans 3:9
What then? Are we [Jews] any better off [than those Gentiles]? No, not at all, for we have already charged that both Jews and Greeks [i.e., Gentiles] alike are under [the power of] sin,
2 Peter 2:19
[Although] these people promise "liberty," they themselves are slaves to corrupting influences, for people are slaves to whatever controls them.

That they may

1 Corinthians 3:21
So, no one should boast about [the knowledge or position of] people. For all things belong to you,
1 Corinthians 5:6
Your boasting is not good. Do you not know that a little yeast can leaven the whole batch of dough?
2 Corinthians 11:18
Since many [other] people boast about worldly matters, I will boast about such things also.

General references

Matthew 23:4
Yes, they require people to bear heavy and difficult responsibilities, and place them on people's shoulders [to carry out], but they themselves will not lift a finger to do them.
Luke 5:38
But freshly squeezed grape juice must be put into newly made animal skins.
1 Corinthians 1:31
So, as it is written [Jer. 9:23f], "The person who [wants to] boast, let him boast about the Lord."
2 Corinthians 10:17
[Jer. 9:24 says], "But the person who boasts should boast about the Lord."