Hebrews 12:16-17 NLT says “Make sure that no one is immoral or godless like Esau, who traded his birthright as the firstborn son for a single meal. You know that afterward, when he wanted his father’s blessing, he was rejected. It was too late for repentance, even though he begged with bitter tears.”
Esau traded off his birthright to his brother Jacob. When he realised what he had done, he wept and begged to get it back. But was Esau truly repentant?