Hebrews 12:16

Any fornicator] In the OT. apostasy from Jehovah is frequently described as adultery or fornication, being a breach of covenant; but here the word should perhaps be understood in the literal sense: cp. Hebrews 13:4; Profane] The word is the antithesis of 'hallowed' or 'consecrated,' and means 'common,' 'unspiritual,' 'secular,' Esau's defect was a want of appreciation of spiritual blessings. He 'despised his birthright' (see Genesis 25:34), which implied not merely material advantage, but the spiritual heritage of the covenant promises.