Hebrews 12:15-17 NIV

[15] See to it that no one falls short of the grace of God and that no bitter root grows up to cause trouble and defile many. [16] See that no one is sexually immoral, or is godless like Esau, who for a single meal sold his inheritance rights as the oldest son. [17] Afterward, as you know, when he wanted to inherit this blessing, he was rejected. Even though he sought the blessing with tears, he could not change what he had done.