Hebrews 5:14 DBY

¹²  For when for the time ye ought to be teachers, ye have again need that [one] should teach you what [are] the elements of the beginning of the oracles of God, and are become such as have need of milk, [and] not of solid food.

¹³  For every one that partakes of milk [is] unskilled in the word of righteousness, for he is a babe;

¹⁴  but solid food belongs to full-grown men, who, on account of habit, have their senses exercised for distinguishing both good and evil.