As a dog returneth to his vomit, so a fool returneth to his folly.

King James Translators' Notes

returneth to his folly: Heb. iterateth his folly

Jamieson-Fausset-Brown Bible Commentary

11. returneth . folly-Though disgusting to others, the fool delights in his folly.

Matthew Henry's Concise Commentary

26:2. He that is cursed without cause, the curse shall do him no more harm than the bird that flies over his head. 3. Every creature must be dealt with according to its nature, but careless and profligate sinners never will be ruled by reason and persuasion. Man indeed is born like the wild ass's colt; but some, by the grace of God, are changed. 4,5. We are to fit our remarks to the man, and address them to his conscience, so as may best end the debate. 6-9. Fools are not fit to be trusted, nor to have any honour. Wise sayings, as a foolish man delivers and applies them, lose their usefulness. 10. This verse may either declare how the Lord, the Creator of all men, will deal with sinners according to their guilt, or, how the powerful among men should disgrace and punish the wicked. 11. The dog is a loathsome emblem of those sinners who return to their vices, 2Pe 2:22. 12. We see many a one who has some little sense, but is proud of it. This describes those who think their spiritual state to be good, when really it is very bad. 13. The slothful man hates every thing that requires care and labour. But it is foolish to frighten ourselves from real duties by fancied difficulties. This may be applied to a man slothful in the duties of religion. 14. Having seen the slothful man in fear of his work, here we find him in love with his ease. Bodily ease is the sad occasion of many spiritual diseases. He does not care to get forward with his business. Slothful professors turn thus. The world and the flesh are hinges on which they are hung; and though they move in a course of outward services, yet they are not the nearer to heaven. 15. The sluggard is now out of his bed, but he might have lain there, for any thing he is likely to bring to pass in his work. It is common for men who will not do their duty, to pretend they cannot. Those that are slothful in religion, will not be at the pains to feed their souls with the bread of life, nor to fetch in promised blessings by prayer. 16. He that takes pains in religion, knows he is working for a good Master, and that his labour shall not be in vain. 17. To make ourselves busy in other men's matters, is to thrust ourselves into temptation. 18,19. He that sins in jest, must repent in earnest, or his sin will be his ruin. 20-22. Contention heats the spirit, and puts families and societies into a flame. And that fire is commonly kindled and kept burning by whisperers and backbiters. 23. A wicked heart disguising itself, is like a potsherd covered with the dross of silver.

Matthew Henry's Whole Bible Commentary

Verse 11

See here, 1. What an abominable thing sin is, and how hateful sometimes it is made to appear, even to the sinner himself. When his conscience is convinced, or he feels smart from his sin, he is sick of it, and vomits it up; he seems then to detest it and to be willing to part with it. It is in itself, and, first or last, will be to the sinner, more loathsome than the vomit of a dog, Ps. 36:2. 2. How apt sinners are to relapse into it notwithstanding. As the dog, after he has gained ease by vomiting that which burdened his stomach, yet goes and licks it up again, so sinners, who have been convinced only and not converted, return to sin again, forgetting how sick it made them. The apostle (2 Pt. 2:22) applies this proverb to those that have known the way of righteousness but are turned from it; but God will spue them out of his mouth, Rev. 3:16.