“But strong meat belongeth to them that are of full age, even those who by reason of use have their sense exercised to discern both good and evil.” (Hebrews 5:11-14)
With all the talk of spiritual gifts these days, the most neglected gift is discernment.
Discernment is the practice of testing or determining what is in the spiritual waters. It is based on the commands we have been given to differentiate between good and bad teaching.
Which implies that everything has a spiritual source.