Hebrews 5:12-14

Webster(i) 12 For when for the time ye ought to be teachers, ye have need of one to teach you again which are the first principles of the oracles of God; and are become such as have need of milk, and not of strong food. 13 For every one that useth milk, is unskillful in the word of righteousness: for he is a babe. 14 But strong food 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.