Ecclesiastes 10:12

10 If the iron be blunt, and he do not whet the edge, then must he put to more strength: but wisdom is profitable to direct.

11 Surely the serpent will bite without enchantment; and a babbler is no better.

The words of a wise man’s mouth are gracious; but the lips of a fool will swallow up himself.

13 The beginning of the words of his mouth is foolishness: and the end of his talk is mischievous madness.

14 A fool also is full of words: a man cannot tell what shall be; and what shall be after him, who can tell him?

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
The words of a wise man’s mouth are gracious, but the lips of a fool consume him.
KJV
The words of a wise man’s mouth are gracious; but the lips of a fool will swallow up himself.
WEB
The words of a wise man’s mouth are gracious; but a fool is swallowed by his own lips.
ASV
The words of a wise man`s mouth are gracious; but the lips of a fool will swallow up himself.
DARBY
The words of a wise man's mouth are gracious; but the lips of a fool swallow up himself.
BLB
The words of the mouth of a wise one [are] favor, and the lips of a fool will swallow him up—
ÅB
Ord fra den vises munn er liflige, men dårens lepper ødelegger ham selv.
OTB
Ord fra den vises munn er nådige, men dårens lepper fortærer ham.
B1930
Ord fra den vises munn er liflige, men dårens leber ødelegger ham selv.

Study notes (Tyndale)

Original text and word study

Cross references