11 Of whom we haue many things to say, and hard to be vttered, seeing ye are dull of hearing.
12 For when for the time yee ought to bee teachers, yee haue neede that one teach you againe which be the first principles of the Oracles of God, and are become such as haue need of milke, and not of strong meat.
13 For euery one that vseth milke, is vnskilful in the word of righteousnes: for he is a babe.
14 But strong meate belongeth to them that are of full age, euen those who by reason of vse haue their senses exercised to discerne both good and euil.
Heb 5:11-14
All scripture is given by inspiration of God and is profitable for doctrine, reproof, correction, and instruction in righteousness (2 Timothy 3:16).