Proverbs 2:6-11
6. For the LORD gives wisdom: out of his mouth comes knowledge and understanding.
 7. He lays up sound wisdom for the righteous: he is a shield to them that walk uprightly.
8. He keeps the paths of justice, and preserves the way of his saints.
 9. Then shall you understand righteousness, and justice, and equity; yea, every good path.
 10. When wisdom enters into your heart, and knowledge is pleasant unto your soul;
 11. Discretion shall preserve you, understanding shall keep you:

Proverbs 16:16,17
16. How much better it is to get wisdom than gold! Yes, to get understanding is to be chosen rather than silver.
17. The highway of the upright is to depart from evil: he that keeps his way preserves his soul.

1Corinthians 11:31
For if we would judge ourselves, we should not be judged.

1Corinthians 15:33
Be not deceived: evil communications corrupt good manners.