1 Corinthians 2:13-16

We also speak these things, not in words taught by human wisdom, but in those taught by the Spirit, explaining spiritual things to spiritual people. But the person without the Spirit does not receive what comes from God’s Spirit, because it is foolishness to him; he is not able to understand it since it is evaluated spiritually. The spiritual person, however, can evaluate everything, and yet he himself cannot be evaluated by anyone. For who has known the Lord’s mind, that he may instruct him? But we have the mind of Christ.