Romans 10:9-10

That if thou confess with thy mouth the Lord Jesus, and believe in thy heart, that God raised him from the dead, thou shalt be saved.

James 3:5-6

So the tongue also is a little member, yet boasteth great things. Behold how much matter a little fire kindleth.

2 Peter 2:18

For by speaking swelling words of vanity, they allure thro' the desire of the flesh, thro' wantonness, those that were clean escaped from them that live in error.

Revelation 3:10

Because thou hast kept the word of my patience, I also will keep thee, from the hour of temptation, which shall come upon the whole world, to try them that dwell upon the earth.

Revelation 12:11

And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.

Revelation 15:5-6

After this I saw, and the temple of the tabernacle of the testimony was opened in heaven:

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 thou confess with thy mouth the Lord Jesus, and believe in thy heart, that God raised him from the dead, thou shalt be saved.
Revelation 3:10
Because thou hast kept the word of my patience, I also will keep thee, from the hour of temptation, which shall come upon the whole world, to try them that dwell upon the earth.
Revelation 12:11
And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.