KJC(i)
15 Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;
16 Lest there be any fornicator, or profane person, as Esau, who for one morsel of food sold his birthright.
17 For you know that afterward, when he would have inherited the blessing, he was rejected: for he found no place of repentance, though he sought it anxiously with tears.