Hebrews 12:12-17 (NKJV)
12 Therefore strengthen the hands which hang down, and the feeble knees,
13 and make straight paths for your feet, so that what is lame may not be dislocated, but rather be healed.
14 Pursue peace with all people, and holiness, without which no one will see the Lord:
15 looking carefully lest anyone fall short of the grace of God; lest any root of bitterness springing up cause trouble, and by this many become defiled;
16 lest there be any fornicator or profane person like Esau, who for one morsel of food sold his birthright.
17 For you know that afterward, when he wanted to inherit the blessing, he was rejected, for he found no place for repentance, though he sought it diligently with tears.