5:11 On this topic we have much to say and it is difficult to explain, since you have become sluggish in hearing. 5:12 For though you should in fact be teachers by this time, you need someone to teach you the beginning elements of God’s utterances. You have gone back to needing milk, not solid food. 5:13 For everyone who lives on milk is inexperienced in the message of righteousness, because he is an infant. 5:14 But solid food is for the mature, whose perceptions are trained by practice to discern both good and evil.