4 Bible Verses about Discernment, Source Of

But we have not received the spirit of the world, but the Spirit who is from God; in order that we may know the things which have been graciously given unto us from God. Which things indeed we speak, not in the teachable words of human wisdom, but in the teachable words of the Spirit, expounding spiritual things to spiritual people. But the intellectual man receives not the things of the Spirit of God; for they are foolishness unto him; and he is not able to know them, because they are spiritually discerned.read more.
But the spiritual man discerns all things, and is himself discerned by no one.

but solid food belongs to the perfect, those having their senses disciplined by use unto the discernment both of the good and the evil.

and he not fashioned after this world: but be ye transformed by the renewing of your mind, that you may prove what is the good and acceptable and perfect will of God.

For who knows the mind of the Lord, who shall give him counsel? But we have the mind of Christ.