John Gill's Bible Commentary Ver. 3. The foolishness of man perverteth his way , etc.] The sinfulness of his heart and nature; the folly which is bound up in it causes him to go astray out of the way in which he should go, or makes things go cross with him; so that the ways he takes do not prosper, nor his schemes succeed; but everything goes against him, and he is brought into straits and difficulties; and his heart fretteth against the Lord ; laying all the blame on him; and ascribing his ill success, not to his own sin and folly, but to divine Providence, which works against him; and therefore frets and murmurs at him; and, instead of charging his own ways with folly, charges the ways of God with inequality; (see Ezekiel 18:25 Jude 1:16).
Matthew Henry Commentary
Verses 3 - Men run into troubles by their own folly, and then fret at the appointments of God.
Original Hebrew אולת200 אדם120 תסלף5557 דרכו1870 ועל5921 יהוה3068 יזעף2196 לבו׃3820