THE EPISTLE OF PAUL THE APOSTLE TO THE HEBREWS.
CHAPTER 5:

12 For when for the time ye ought to be
teachers, ye have need that one teach you
again which be the first principles of the
oracles of God; and are become such as
have need of milk, and not of strong meat.
13 For every one that useth milk is
unskilful in the word of righteousness: for
he is a babe.
14 But strong meat belongeth to them that
are of full age, even those who by reason
of use have their senses exercised to
discern both good and evil.