Is 28: 9, 10 KJV "Whom shall he teach knowledge? And whom shall he make to understand doctrine? them that are weaned from the milk and drown from the breasts. For precept must6 be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little."
Heb 5: KJV "For when for the time ye ought to be teachers, ye have need that one teach you again which be the first eprincipals of God and are become such as have need of milk and not strong meat. For everyone that useth milk is unskillful in the word of righteousness for he is a babe. But strong meat belongeth unto them who are of full age, even those who by reason of use have their senses exercised to discern both good and evil."