Hebrews 5:14

Who have trained and used their tastes. "The child must eat whatever is given to it; the boy is warned what to eat and what to avoid; as he grows, he learns by his experience, so that when he is grown, he does not need an instructor or a priest to tell him what is good and what is poisonous. This Letter shows the first evidence of maturity is the ability to teach; the second, knowing the difference between good and evil in things that are being taught. The one implies the other.