Hebrews 5:11-14 - Advanced Teaching Hindered By Immaturity
11 Of whom great is the word to us, and difficult of interpretation to speak, since ye have been sluggish in the hearing. 12 For also ye ought to be teachers for the time, again ye have need for some one to teach you the elements of the beginning of the sayings of God; and have become those having need of milk, and not of firm food. 13 For every one partaking of milk is inexperienced in the word of justice: for he is a child. 14 And firm food is of the perfected, of them by habit having the senses exercised for the separation of good and evil.