Verse 4. - He deviseth mischief upon his bed; rather, he deviseth iniquity - the same word as in the preceding verse. In the night, when he should be looked in innocent slumber, he lies awake, devising wicked schemes against others (comp. Proverbs 4:16; Micah 2:1). He setteth himself in a way that is not good. More correct than the Prayer-book Version, "He hath set himself in no good way." The wicked man is not merely negatively bad; he determinately chooses a path of life that is evil. He abhorroth not evil. He has no aversion to it, no horror of it, no shrinking from it. Whether a thing is right or wrong is to him a matter of complete indifference. So callous is he, so hardened.

36:1-4 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.He deviseth mischief upon his bed,.... He casts about in his mind on his pillow, when at leisure from all employment; and consults and contrives schemes how to compass his lusts, and to do injury to others, without doing which he cannot sleep;

he setteth himself in a way that is not good, in an evil way, which he chooses and delights in, and determines to continue in, he leaving the paths of righteousness to walk in the ways of darkness:

he abhorreth not evil; which is to be abhorred both because of its nature and effects; see Romans 12:9; but on the contrary he loves it, takes pleasure in doing it, and in them that commit it: thus, by his thoughts, words, and actions, he appears to be devoid of the fear of God.