Proverbs 18:7
"A fool’s mouth is his destruction, and his lips are the snare of his soul."
Cross References (ranked by relevance)
He that keepeth his mouth keepeth his life: but he that openeth wide his lips shall have destruction.
Wise men lay up knowledge: but the mouth of the foolish is near destruction.
The wicked is snared by the transgression of his lips: but the just shall come out of trouble.
So they shall make their own tongue to fall upon themselves: all that see them shall flee away.
As for the head of those that compass me about, let the mischief of their own lips cover them.
The wise in heart will receive commandments: but a prating fool shall fall.
Thou art snared with the words of thy mouth, thou art taken with the words of thy mouth.
And it came to pass, when he saw her, that he rent his clothes, and said, Alas, my daughter! thou hast brought me very low, and thou art one of them that trouble me: for I have opened my mouth unto the LORD, and I cannot go back.