Hebrews 12:14-17

14Pursue peace with all, and holiness, without which no one shall see the Lord:

15watching lest [there be] any one who lacks the grace of 1God; lest any root of bitterness springing up trouble [you], and many be defiled by it;

16lest [there be] any fornicator, or profane person, as Esau, who for one meal sold his birthright;

17for ye know that also afterwards, desiring to inherit the blessing, he was rejected, (for he found no place for repentance) although he sought it earnestly with tears.