Proverbs 26:11

“As a dog returneth to his vomit, etc.] Who being sick with what he has eaten, casts it up again, and afterwards returns unto it and licks it up; [so] a fool returneth to his folly, or “repeats”f723 it, time after time, many times, as Ben Melech; or a wicked man turns to his wickedness, who, having had some qualms upon his conscience for sin, for a while forsakes it; but that fit being over, and he forgetting all his former horror and uneasiness, returns to his old course of life: a wicked man is here compared to a dog, as he is elsewhere for his impudence and voraciousness in sinning; and the filthiness of sin is expressed by the vomit of a dog, than which nothing is more nauseous and…”

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

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

“a dog: Exo 8:15; Mat 12:45; Pe2 2:22 returneth to his folly: Heb. iterateth his folly Proverbs 26:12”

“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.…”