29:10-21 The national covenant made with Israel, not only typified the covenant of grace made with true believers, but also represented the outward dispensation of the gospel. Those who have been enabled to consent to the Lord's new covenant of mercy and grace in Jesus Christ, and to give up themselves to be his people, should embrace every opportunity of renewing their open profession of relation to him, and their obligation to him, as the God of salvation, walking according thereto. The sinner is described as one whose heart turns away from his God; there the mischief begins, in the evil heart of unbelief, which inclines men to depart from the living God to dead idols. Even to this sin men are now tempted, when drawn aside by their own lusts and fancies. Such men are roots that bear gall and wormwood. They are weeds which, if let alone, overspread the whole field. Satan may for a time disguise this bitter morsel, so that thou shalt not have the natural taste of it, but at the last day, if not before, the true taste shall be discerned. Notice the sinner's security in sin. Though he hears the words of the curse, yet even then he thinks himself safe from the wrath of God. There is scarcely a threatening in all the book of God more dreadful than this. Oh that presumptuous sinners would read it, and tremble! for it is a real declaration of the wrath of God, against ungodliness and unrighteousness of man.

10-29. Ye stand this day all of you before the Lord your God—The whole congregation of Israel, of all ages and conditions, all—young as well as old; menials as well as masters; native Israelites as well as naturalized strangers—all were assembled before the tabernacle to renew the Sinaitic covenant. None of them were allowed to consider themselves as exempt from the terms of that national compact, lest any lapsing into idolatry might prove a root of bitterness, spreading its noxious seed and corrupt influence all around (compare Heb 12:15). It was of the greatest consequence thus to reach the heart and conscience of everyone, for some might delude themselves with the vain idea that by taking the oath (De 29:12) by which they engaged themselves in covenant with God, they would surely secure its blessings. Then, even though they would not rigidly adhere to His worship and commands, but would follow the devices and inclinations of their own hearts, yet they would think that He would wink at such liberties and not punish them. It was of the greatest consequence to impress all with the strong and abiding conviction, that while the covenant of grace had special blessings belonging to it, it at the same time had curses in reserve for transgressors, the infliction of which would be as certain, as lasting and severe. This was the advantage contemplated in the law being rehearsed a second time. The picture of a once rich and flourishing region, blasted and doomed in consequence of the sins of its inhabitants, is very striking, and calculated to awaken awe in every reflecting mind. Such is, and long has been, the desolate state of Palestine; and, in looking at its ruined cities, its blasted coast, its naked mountains, its sterile and parched soil—all the sad and unmistakable evidences of a land lying under a curse—numbers of travellers from Europe, America, and the Indies ("strangers from a far country," De 29:22) in the present day see that the Lord has executed His threatening. Who can resist the conclusion that it has been inflicted "because the inhabitants had forsaken the covenant of the Lord God of their fathers. … and the anger of the Lord was kindled against this land, to bring upon it all the curses that are written in this book"?