Hebrews 12:11 in the King James Version
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.
Context
10 For they indeed for a few days disciplined us as seemed good to them, but he for our profit, that we may be partakers of his holiness.
11 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.
12 Therefore lift up the hands that hang down and the feeble knees,