39 I said: “I will guard my step

To avoid sinning with my tongue.+

I will guard my mouth with a muzzle+

As long as anyone wicked is in my presence.”

18 Thoughtless speech is like the stabs of a sword,

But the tongue of the wise is a healing.+

 2 The tongue of the wise makes good use of knowledge,+

But the mouth of the stupid blurts out foolishness.