Hebrews 5:14; Hebrews 12:11

Hebrews 5:14

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.

Hebrews 12:11

11 Now no chastening for the present seemeth to be joyous, but grievous: nevertheless afterward it yieldeth the peaceable fruit of righteousness unto them which are exercised thereby.