12:16 {11} Lest there [be] any fornicator, or profane person, as Esau, who for one morsel of meat sold his birthright.
(11) We must shun immorality, and a profane mind, that is, such a mind as does not give God his due honour, which wickedness, how severely God will at length punish, the horrible example of Esau teaches us.
12:16 Lest there [be] any fornicator. Of course such a sinner would not live the life of holiness enjoined.
Or profane person. A worldly person who profanes holy privileges by placing on them a worldly estimate.
As Esau. See Ge 25:27-30. He illustrates what is meant by a profane person.
Who for one morsel of meat sold his birthright. For a savory meal he bartered away a birthright bestowed by God. So any professing Christian who would sell his heavenly birthright for worldly advantages would be a profane person.
12:16 Esau was profane for so slighting the blessing which went along with the birth - right.
12:12-17 A burden of affliction is apt to make the Christian's hands hang down, and his knees grow feeble, to dispirit him and discourage him; but against this he must strive, that he may better run his spiritual race and course. Faith and patience enable believers to follow peace and holiness, as a man follows his calling constantly, diligently, and with pleasure. Peace with men, of all sects and parties, will be favourable to our pursuit of holiness. But peace and holiness go together; there can be not right peace without holiness. Where persons fail of having the true grace of God, corruption will prevail and break forth; beware lest any unmortified lust in the heart, which seems to be dead, should spring up, to trouble and disturb the whole body. Falling away from Christ is the fruit of preferring the delights of the flesh, to the blessing of God, and the heavenly inheritance, as Esau did. But sinners will not always have such mean thoughts of the Divine blessing and inheritance as they now have. It agrees with the profane man's disposition, to desire the blessing, yet to despise the means whereby the blessing is to be gained. But God will neither sever the means from the blessing, nor join the blessing with the satisfying of man's lusts. God's mercy and blessing were never sought carefully and not obtained.