Compare on the thought Jeremiah 23:17. The secret and presumptuous sinner is meant who flatters himself that all is well and will be well with him, since he follows his own devices and prospers. Compare Psalm 73:11 ff.

To add drunkenness to thirst - The sense is probably: "Himself, drinking iniquity like water, Job 15:16, he corrupts and destroys others who are thirsting for it or prone to it."

The sense of the whole passage from Deuteronomy 29:16 onward to Deuteronomy 29:20 may be exhibited thus: "Ye have seen the abominations of idolatry among the pagan. Do you therefore look diligently that there be no secret idolater among you; a root of bitterness to all about him. Let there be no one, I say, who when he hears the curses of the Law against this sin, flatters himself, saying within himself, 'All will be well, for I walk unmolested in my own self-chosen path; ' and thus acting, not only takes his own fill of sin, but destroys likewise every tempted brother within his reach, for the Lord will not spare him," etc.

To add drunkenness to thirst - A proverbial expression denoting the utmost indulgence in all sensual gratifications.

And it cometh to pass, when he heareth the words of this curse,.... That is, the man before compared to a root bearing bitter herbs, when he should hear the curses pronounced by the law against such persons as himself:

that he bless himself in his heart; inwardly pronounce himself blessed, thinking himself secure from the curse of the law, and flattering himself it will never reach him nor come upon him:

saying, I shall have peace; all happiness and prosperity, in soul, body, and estate; inward peace of mind now, and eternal peace hereafter:

though I walk in the imagination of my heart; in worshipping idols which he vainly and wickedly imagined to be gods; to the worship of which his wicked heart prompted him, and he was resolutely and stubbornly bent upon, and in which he continued:

to add drunkenness to thirst; as a thirsty man to quench his thirst drinks, and adds to that, or drinks yet more and more until he is drunken; so a man inclined to idolatry, that has a secret desire after it, thirsts after such stolen or forbidden waters, and drinks of them, adds thereunto, drinks again and again until he is drunk with the wine of fornication, or idolatry, as it is called Revelation 17:2; so the Targums of Onkelos and Jonathan understand the words of adding sin to sin, particularly of adding sins of ignorance to pride, or to presumptuous ones. Wicked men, deceivers and deceived, always grow worse and worse, increasing to more ungodliness, and yet promise themselves peace and impunity, 1 Thessalonians 5:3.

And it come to pass, when he heareth the words of this curse, that he bless himself in his heart, saying, I shall have peace, though I walk in the imagination of mine heart, to add {k} drunkenness to thirst:

(k) For as he that is thirsty desires to drink much so he that follows his appetites seeks by all means and yet cannot be satisfied.

29:19 Of this curse - Of that oath where - in he swore he would keep covenant with God, and that with a curse pronounced against himself if he did not perform it. Bless himself - Flatter himself in his own eyes, with vain hopes, as if God did not mind such things, and either could not, or would not punish them. Peace - Safety and prosperity. My own heart - Though I do not follow God's command, but my own devices. To add drunkenness to thirst - The words may be rendered, to add thirst to drunkenness, and so the sense may be, that when he hath multiplied his sins, and made himself as it were drunk with them, yet he is not satisfied therewith, but still whets his appetite, and provokes his thirst after more, as drunkards often use means to make themselves thirst after more drink.

imagination: or, stubbornness

drunkenness...: Heb. the drunken to the thirsty

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.