James 4:16

But you are now boasting in your arrogances: all such boasting is wicked.

1 Corinthians 5:6

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

1 Corinthians 4:7-8

For who judges you? and what have you which you did not receive. But if indeed you received it, why do you boast, as not having received it?

James 3:14

But if you have bitter envy and strife in your heart, do not boast, and lie against the truth.

Revelation 18:7

as to so many things as she has glorified herself, and lived wantonly, give unto her so much torment and sorrow. Because she says in her heart, I sit a queen, and am no widow; and I see no sorrow;

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 envy and strife in your heart, do not boast, and lie against the truth.
1 Corinthians 4:7
For who judges you? and what have you which you did not receive. But if indeed you received it, why do you boast, as not having received it?
1 Corinthians 5:6
Your boasting is not good. Do you not know that a little leaven leavens the whole lump?
Revelation 18:7
as to so many things as she has glorified herself, and lived wantonly, give unto her so much torment and sorrow. Because she says in her heart, I sit a queen, and am no widow; and I see no sorrow;