| Barnes' Notes on the Bible Deviseth his way - i. e., Thinks it out with anxious care; yet it is the Lord and He only who directs the steps. Compare Proverbs 16:1.
Clarke's Commentary on the BibleA man's heart deviseth his way - This is precisely the same sentiment as that contained in the first verse, on the true meaning of which so much has been already said.
Gill's Exposition of the Entire BibleA man's heart deviseth his way,.... This is to be understood, not of a wicked man, in whose heart is frowardness, and who devises mischief and evil imaginations continually, Proverbs 6:14; for such are an abomination to the Lord; nor will he direct their goings, or prosper and succeed them in their ways: but of a good man, or righteous man, as Aben Ezra; who thinks of the way in which he should go, and desires to walk in a right way, as Jarchi; and who is influenced by the Spirit and grace of God to think and act in this manner; for otherwise the way of man is not in himself; it is not of his own devising and finding out; nor is his disposition to walk in it of himself; and it is only such a man, a good man, whose steps are ordered by the Lord, as follows; see Jeremiah 10:23; but the Lord directeth his steps: to go right on, and not turn to the right hand or the left; and to walk safely and surely, through a variety of troubles and difficulties, to his kingdom and glory.
Keil and Delitzsch Biblical Commentary on the Old Testament9 The heart of man deviseth his way; But Jahve directeth his steps. Similar to this is the German proverb: "Der Mensch denkt, Gott lenkt" [ equals our "man proposes, God disposes"], and the Arabic el-‛abd (העבד equals man) judebbir wallah juḳaddir; Latin, homo proponit, Deus disponit; for, as Hitzig rightly remarks, 9b means, not that God maketh his steps firm (Venet., Luther, Umbreit, Bertheau, Elster), but that He gives direction to him (Jerome, dirigere). Man deliberates here and there (חשּׁב, intens. of חשׁב, to calculate, reflect) how he will begin and carry on this or that; but his short-sightedness leaves much out of view which God sees; his calculation does not comprehend many contingencies which God disposes of and man cannot foresee. The result and issue are thus of God, and the best is, that in all his deliberations one should give himself up without self-confidence and arrogance to the guidance of God, that one should do his duty and leave the rest, with humility and confidence, to God.
Geneva Study BibleA {e} man's heart deviseth his way: but the LORD directeth his steps. (e) He shows the folly of man who thinks that his ways are in his own hand, and yet is not able to move one foot unless God gives force.
Wesley's Notes 16:9 Deviseth - Proposes what he will do. Directeth - Over - rules and disposes all his designs and actions.
Jamieson-Fausset-Brown Bible Commentary9. (Compare Pr 16:3). directeth-establisheth.
Matthew Henry's Concise Commentary16:4. God makes use of the wicked to execute righteous vengeance on each other; and he will be glorified by their destruction at last. 5. Though sinners strengthen themselves and one another, they shall not escape God's judgments. 6. By the mercy and truth of God in Christ Jesus, the sins of believers are taken away, and the power of sin is broken. 7. He that has all hearts in his hand, can make a man's enemies to be at peace with him. 8. A small estate, honestly come by, will turn to better account than a great estate ill-gotten. 9. If men make God's glory their end, and his will their rule, he will direct their steps by his Spirit and grace. 10. Let kings and judges of the earth be just, and rule in the fear of God. 11. To observe justice in dealings between man and man is God's appointment. | 
