Wisdom 1:11

11 Therefore beware of murmuring, which is unprofitable, and restrain your tongue from backbiting; for there is no word so secret that shall go for nought, and the mouth that belieth slayeth the soul.

Wisdom 1:11 In-Context

9 For inquisition shall be made into the counsels of the ungodly; and the sound of his words shall come unto the Lord for the manifestation of his wicked deeds.

10 For the ear of jealousy heareth all things, and the noise of murmurings is not hid.

11 Therefore beware of murmuring, which is unprofitable, and restrain your tongue from backbiting; for there is no word so secret that shall go for nought, and the mouth that belieth slayeth the soul.

12 Seek not death by the error of your life, and pull not upon yourselves destruction with the works of your hands.

13 For God made not death; neither hath He pleasure in the destruction of the living.