Deuteronomy 29:19
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 drunkenness to thirst: 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 drunkenness to thirst:
The verse pictures one who has turned away from the Lord to follow the desires, imagination, and stubborn bent of his own heart, who hears the words of the covenant curse yet blesses himself inwardly and assures himself that he will have peace while he persists in sin. Hearing the curse gives such a self-reassuring hearer no protection, for the outward hearing cannot shield an inward resolve to continue in his own way. That self-assurance is rebellion against God, and it brings His anger and judgment and draws down the curses of the covenant upon the one who cherishes it.
The warning bears directly against disregarding God's law and Sabbath, and against parents who fail to teach their children obedience to God's commandments, since both presume upon peace while departing from what He has required. To tell a sinner that it shall be well with him while he continues in sin is to repeat this same false peace. Such speech is counterfeit charity, for it covers evil, calls sin holiness and truth, heals the hurt only slightly by crying peace when there is no peace, and blunts the sword of the Spirit so that it does no execution.
Genuine charity does the opposite, hating the sin while loving the sinner. It warns him faithfully of his danger and points him to the Lamb of God who takes away sin. Sin is not to be cloaked but to be taken away.