Job 34:3

Doth not the ear try words? and the mouth taste his meat?

But he that is spiritual judgeth all things, yet he himself is judged of no man.

But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil.

Behold, now I have opened my mouth, my tongue hath spoken in my mouth.

Neither have I suffered my mouth to sin by wishing a curse to his soul.

Is there iniquity in my tongue? cannot my taste discern perverse things?