Hebrews 12:14

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.

Therefore lift up the hands that hang down and the feeble knees,

and make straight paths for your feet, so what is lame may not be dislocated, but rather be healed.

looking carefully lest there be any man who falls short of the grace of God, lest any root of bitterness springing up trouble you and many be defiled by it,

lest there be any sexually immoral person or profane person, like Esau, who sold his birthright for one meal.

For you know that even when he afterward desired to inherit the blessing, he was rejected, for he found no place for a change of mind though he sought it diligently with tears.