" 11About this we have much to say, and it is  c hard to explain, since you have become dull of hearing. 12For though by this time you ought to be teachers, you need someone to teach you again  d the basic principles of the oracles of God. You need  e milk, not solid food, 13for everyone who lives on milk is unskilled in the word of righteousness, since he is  f a child. 14But solid food is for  g the mature, for those who have their powers  h of discernment trained by constant practice to distinguish good from evil. "