Psalms 36:2

From this psalm our hearts should be duly affected with hatred of sin, and seek satisfaction in God's loving-kindness. Here is the root of bitterness, from which all the wickedness of wicked men comes. It takes rise from contempt of God, and the want of due regard to him. Also from the deceit they put upon their own souls. Let us daily beg of God to preserve us from self-flattery. Sin is very hurtful to the sinner himself, and therefore ought to be hateful; but it is not so. It is no marvel, if those that deceive themselves, seek to deceive all mankind; to whom will they be true, who are false to their own souls? It is bad to do mischief, but worse to devise it, to do it with plot and management. If we willingly banish holy meditations in our solitary hours, Satan will soon occupy our minds with sinful imaginations. Hardened sinners stand to what they have done, as though they could justify it before God himself.

For. Here is the argument to prove the proposition laid down in the former verse. David here runs over the process of reasoning by which he had become convinced that wicked men have no proper idea of God or respect for him. God fearing men see their sins and bewail them, where the reverse is the case we may be sure there is no fear of God. He flattereth himself in his own eyes. He counts himself a fine fellow, worthy of great respect. He quiets his conscience, and so deceives his own judgment as to reckon himself a pattern of excellence; if not for morality, yet for having sense enough not to be enslaved by rules which are bonds to others. He is the free thinker, the man of strong mind, the hater of cant, the philosopher; and the servants of God are, in his esteem, mean spirited and narrow minded. Of all flatteries this is the most absurd and dangerous. Even the silliest bird will not set traps for itself; the most pettifogging attorney will not cheat himself. To smooth over one's own conduct to one's conscience (which is the meaning of the Hebrew) is to smooth one's own path to hell. The descent to eternal ruin is easy enough, without making a glissade of it, as self flatters do. Until his iniquity be found to be hateful. At length he is found out and detested, despite his self conceit. Rottenness smells sooner or later too strong to be concealed. There is a time when the leprosy cannot be hidden. At last the old house can no longer be propped up, and falls about the tenant's ears: so there is a limit to a man's self gratulation; he is found out amid general scorn, and can no longer keep up the farce which he played so well. If this happens not in this life, the hand of death will let light in upon the coveted character, and expose the sinner to shame and contempt. The self flattering process plainly proves the atheism of sinners, since the bare reflection that God sees them would render such self flatteries extremely difficult, if not impossible. Belief in God, like light reveals, and then our sin and evil are perceived; but wicked men are in the dark, for they cannot see what is so clearly within them and around them that it stares them in the face.