Romans 10:9-10

For if you confess with your mouth the Lord Jesus, and believe with your mind that God raised him from the dead, you shall be saved;

James 3:5-6

so also the tongue is a small member and boasts of great things. Behold, how much wood a little fire kindles!

2 Peter 2:18

For speaking extravagant words of vanity, they entice with carnal desires of lewdness those scarcely escaped from them, those living in error,

Revelation 3:10

Because you have kept the word of my patience, I also will keep you from the hour of trial which is to come on all the world, to try those who dwell on the earth.

Revelation 12:11

And they conquered him by the blood of the Lamb and by the word of their testimony, and exposed their lives to death.

Revelation 15:5-6

And after this I saw, and the temple of the tabernacle of the testimony was opened in heaven, [the inner temple],

Treasury of Scripture Knowledge

Summary

In the mouth of the foolish is a rod of pride: but the lips of the wise shall preserve them.

Bible References

But

Romans 10:9
For if you confess with your mouth the Lord Jesus, and believe with your mind that God raised him from the dead, you shall be saved;
Revelation 3:10
Because you have kept the word of my patience, I also will keep you from the hour of trial which is to come on all the world, to try those who dwell on the earth.
Revelation 12:11
And they conquered him by the blood of the Lamb and by the word of their testimony, and exposed their lives to death.