Hebrews 12:11 in the World English Bible
All chastening seems for the present to be not joyous but grievous; yet afterward it yields the peaceful fruit of righteousness to those who have been trained by it.
Context
10 For they verily for a few days chastened us after their own pleasure; but he for our profit, that we might be partakers of his holiness.
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.
12 Wherefore lift up the hands which hang down, and the feeble knees;