James 3:5

So, also, the tongue is a little member, and boasts great things. Behold, how great a forest does a little fire set in a blaze.

Revelation 13:5-6

And there was given him a mouth that spoke great things and impious words; and authority was given to him to continue forty-two months.

2 Peter 2:18

For by speaking boastful words of folly, they allure through the lusts of the flesh, and through lasciviousness, those who had really escaped from those who live in error.

Jude 1:16

These are murmurers, fault-finders, walking ac cording to their own desires; and their mouth speaks boastful words, while they admire persons for the sake of gain.

Treasury of Scripture Knowledge

Summary

Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth!

Bible References

So

2 Peter 2:18
For by speaking boastful words of folly, they allure through the lusts of the flesh, and through lasciviousness, those who had really escaped from those who live in error.
Jude 1:16
These are murmurers, fault-finders, walking ac cording to their own desires; and their mouth speaks boastful words, while they admire persons for the sake of gain.
Revelation 13:5
And there was given him a mouth that spoke great things and impious words; and authority was given to him to continue forty-two months.