Romans 10:9-10

that if you shall confess with your mouth Jesus as Lord, and shall believe in your heart that God raised Him from the dead, you shall be saved;

James 3:5-6

So also the tongue is a little member, and boasts great things. Behold, how small a fire kindles how great a forest!

2 Peter 2:18

For, uttering great swelling words of vanity, they entice, in desires of the flesh, by their lasciviousness, those just escaping from those who live in error;

Revelation 3:10

Because you kept the word of My patience. I also will keep you from the hour of trial, which is about to come upon the whole inhabited earth, to try those who dwell upon the earth.

Revelation 12:11

and they overcame him because of the blood of the Lamb, and because of the word of their testimony, and they loved not their soul, even to death.

Revelation 15:5-6

And after these things I saw, and the Temple of the Tabernacle of the testimony in Heaven was opened;

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
that if you shall confess with your mouth Jesus as Lord, and shall believe in your heart that God raised Him from the dead, you shall be saved;
Revelation 3:10
Because you kept the word of My patience. I also will keep you from the hour of trial, which is about to come upon the whole inhabited earth, to try those who dwell upon the earth.
Revelation 12:11
and they overcame him because of the blood of the Lamb, and because of the word of their testimony, and they loved not their soul, even to death.