Proverbs 4:20-22
My son, attend to my words; incline thine ear unto my sayings. [21] Let them not depart from thine eyes; keep them in the midst of thine heart. [22] For they are life unto those that find them, and health to all their flesh.

Proverbs 18:21
Death and life are in the power of the tongue: and they that love it shall eat the fruit thereof.

Proverbs 10:11
The mouth of a righteous man is a well of life: but violence covereth the mouth of the wicked.

Job 22:28
Thou shalt also decree a thing, and it shall be established unto thee: and the light shall shine upon thy ways.