Притчи 26:11

The series of proverbs regarding fools is continued: Like a dog which returneth to his vomit, Is a fool who cometh again with his folly. שׁב is like שׁונה, particip.; only if the punctuation were כּכּלב, ought "which returneth to his vomit" to be taken as a relative clause (vid., under Psa 38:14). Regarding על as designating the terminus quo with verbs of motions, vid., Khler under Mal. 3:24. On קא = קיא, cf. Pro 23:8. Luther rightly; as a dog devours again his vomit. The lxx translate: ὥσπερ κύων ὅταν ἐπέλθῃ ἐπὶ τὸν ἑαυτοῦ ἔμετον; the reference in Pe2 2:22 : κύων ἐπιστρέψας ἐπὶ τὸ ἴδιον ἐξέραμα, is thus not from the lxx; the Venet. is not connected with this N.T. citation, but with the lxx, if its accordance with it is not merely accidental. To devour again its vomit is common with the dog. (Note: Vid., Schulze's Die bibl. Sprichwrter der deutschen Sprache, p. 71f.) Even so, it is the manner of fools to return again in word and in deed to their past folly (vid., regarding שׁנה with ב of the object. Pro 17:9); as an Aram. popular saying has it: the fool always falls back upon his foolish conduct. (Note: Vid., Wahl's Das Sprichwort der heb.-aram. Literatur, p. 147; Duke's Rabbin. Blumenlese, p. 9.) He must needs do so, for folly has become to him a second nature; but this "must" ceases when once a divine light shines forth upon him. The lxx has after Pro 26:11 a distich which is literally the same as Sir. 4:21.

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, Psa 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 (Pe2 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.

26:11 Even when foolishness brings terrible consequences, a fool persists in it (17:10; see also 2 Pet 2:22).