Hebrews 5:14 in the World English Bible
But solid food is for those who are full grown, who by reason of use have their senses exercised to discern good and evil.
Context
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.