Hebrews 12:15-17

Twentieth_Century(i) 15 Take care that no one fails to use the loving help of God, 'that no bitterness is allowed to take root and spring up, and cause trouble,' and so poison the whole community. 16 Take care that no one becomes immoral, or irreligious like Esau, who sold his birthright for a single meal. 17 For you know that even afterwards, when he wished to claim his father's blessing, he was rejected--for he never found an opportunity to repair his error--though he begged for the blessing with tears.