He is being a trickster or a rascal in taking advantage of his brother. Jacob was guilty of scheming in the flesh to gain something God said was already his. Yet we should remember the far greater blame is placed on Esau, who despised his birthright . History shows that men prefer illusions to realities, choose time rather than eternity, and the pleasures of sin for a season rather than the joys of God forever. Men will read trash rather than the Word of God, and adhere to a system of priorities that leaves God out of their lives.
Men still sell their birthright for a mess of pottage.