James 4:16

As it is, you boast in your arrogance. All such boasting is evil.

1 Corinthians 5:6

Your boasting is not good. Do you not know that a little leaven leavens the whole lump of dough?

1 Corinthians 4:7-8

For who regards you as different? What do you have that you did not receive? And if you did receive it, why do you boast as if you had not received it?

James 3:14

But if you have bitter jealousy and selfish ambition in your hearts, do not boast and be false to the truth.

Revelation 18:7

As she glorified herself and played the wanton, so give her a like measure of torment and mourning; for she says in her heart, 'A queen I sit, and I am not a widow, mourning I will never see.'

Treasury of Scripture Knowledge

Summary

But now ye rejoice in your boastings: all such rejoicing is evil.

Bible References

General references

James 3:14
But if you have bitter jealousy and selfish ambition in your hearts, do not boast and be false to the truth.
1 Corinthians 4:7
For who regards you as different? What do you have that you did not receive? And if you did receive it, why do you boast as if you had not received it?
1 Corinthians 5:6
Your boasting is not good. Do you not know that a little leaven leavens the whole lump of dough?
Revelation 18:7
As she glorified herself and played the wanton, so give her a like measure of torment and mourning; for she says in her heart, 'A queen I sit, and I am not a widow, mourning I will never see.'