Proverbs 14:7
Go into the presence of a foolish man, and thou shall not perceive the lips of knowledge.
Proverbs 9:6
Forsake ye simpleness, and live, and walk in the way of understanding.
Proverbs 13:20
Walk with wise men, and thou shall be wise. But the companion of fools shall smart for it.
Proverbs 19:27
To err from the words of knowledge, cease, my son, to hear instruction.
1 Corinthians 5:11
But now I write to you not to associate if any man who is called a brother is a fornicator, or a greedy man, or an idolater, or a slanderer, or a drunkard, or a predator, not even to eat with such kind.
Ephesians 5:11
And do not associate with the unfruitful works of darkness, but instead even rebuke them.