Romans 10:9-10

that if with your mouth you confess Jesus as Lord and in your heart believe that God brought Him back to life, you shall be saved.

James 3:5-6

In the same way the tongue is an insignificant part of the body, but it is immensely boastful. Remember how a mere spark may set a vast forest in flames.

2 Peter 2:18

For, while they pour out their frivolous and arrogant talk, they use earthly cravings--every kind of immorality--as a bait to entrap men who are just escaping from the influence of those who live in error.

Revelation 3:10

Because in spite of suffering you have guarded My word, I in turn will guard you from that hour of trial which is soon coming upon the whole world, to put to the test the inhabitants of the earth.

Revelation 12:11

But they have gained the victory over him because of the blood of the Lamb and of the testimony which they have borne, and because they held their lives cheap and did not shrink even from death.

Revelation 15:5-6

After this, when the doors of the sanctuary of the tent of witness in Heaven were opened, I looked;

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 with your mouth you confess Jesus as Lord and in your heart believe that God brought Him back to life, you shall be saved.
Revelation 3:10
Because in spite of suffering you have guarded My word, I in turn will guard you from that hour of trial which is soon coming upon the whole world, to put to the test the inhabitants of the earth.
Revelation 12:11
But they have gained the victory over him because of the blood of the Lamb and of the testimony which they have borne, and because they held their lives cheap and did not shrink even from death.