1 Corinthians 2:13-15

Twentieth_Century(i) 13 And we speak of these gifts, not in language taught by human philosophy, but in language taught by the Spirit, explaining spiritual things in spiritual words. 14 The merely intellectual man rejects the teaching of the Spirit of God; for to him it is mere folly; he cannot grasp it, because it is to be understood only by spiritual insight. 15 But the man with spiritual insight is able to understand everything, although he himself is understood by no one.