| Clarke's Commentary on the Bible Spreadeth a net for his feet - Beware of a flatterer; he does not flatter merely to please you, but to deceive you and profit himself.
Gill's Exposition of the Entire BibleA man that flattereth his neighbour,.... That speaks smooth things to him gives him flattering titles, speaks fair to his face, highly commends him on one account or another: spreadeth a net for his feet; has an idle design upon him, and therefore should be guarded against; his view is to draw him into a snare and make a prey of him; he attacks him on his weak side, and hopes to make some advantage of it to himself; wherefore flatterers should be avoided as pernicious persons; or he spreads a net for his own feet, and is taken in the snare which he had laid for his neighbour; or falls into the pit he dug for him, as Gersom observes; see Psalm 140:5.
Keil and Delitzsch Biblical Commentary on the Old Testament5 A man who flattereth his neighbour Spreadeth a net for his steps. Fleischer, as Bertheau: vir qui alterum blanditiis circumvenit; but in the על there does not lie in itself a hostile tendency, an intention to do injury; it interchanges with אל, Psalm 36:3, and what is expressed in line second happens also, without any intention on the part of the flatterer: the web of the flatterer before the eyes of a neighbour becomes, if he is caught thereby, a net for him in which he is entangled to his own destruction (Hitzig). החליק signifies also, without any external object, Proverbs 28:23; Proverbs 2:16, as internally transitive: to utter that which is smooth, i.e., flattering. פּעמיו is, as Psalm 57:7 equals רגליו, for which it is the usual Phoenician word.
Geneva Study BibleA man that flattereth his neighbour {a} spreadeth a net for his feet. (a) He who gives ear to the flatterer is in danger as the bird is before the fowler.
Jamieson-Fausset-Brown Bible Commentary5. (Compare Pr 26:28). spreadeth . feet-By misleading him as to his real character, the flatterer brings him to evil, prepared by himself or others.
Matthew Henry's Concise Commentary29:1 If God wounds, who can heal? The word of God warns all to flee from the wrath to come, to the hope set before us in Jesus Christ. 2. The people have cause to rejoice or mourn, as their rulers are righteous or wicked. 3. Divine wisdom best keeps us from ruinous lusts. 4. The Lord Jesus is the King who will minister true judgment to the people. 5. Flatterers put men off their guard, which betrays them into foolish conduct. 6. Transgressions always end in vexations. Righteous men walk at liberty, and walk in safety. 7. This verse is applicable to compassion for the distress of the poor, and the unfeeling disregard shown by the wicked. 8. The scornful mock at things sacred and serious. Men who promote religion, which is true wisdom, turn away the wrath of God. 9. If a wise man dispute with a conceited wrangler, he will be treated with anger or ridicule; and no good is done. 10. Christ told his disciples that they should be hated of all men. The just, whom the blood-thirsty hate, gladly do any thing for their salvation. | 
