1 Peter 3:15
And be always ready to give an answer to every one that asketh you a reason of the hope that is in you, with meekness and fear:
Matthew 12:34
Ye brood of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaketh.
Titus 1:10-11
For there are many unruly vain-talkers and deceivers, especially they of the circumcision,
James 3:6-8
And the tongue is a fire, a world of iniquity: it is the tongue among the members which defileth the whole body and setteth on fire the course of nature, and is set on fire of hell.
2 Peter 2:18
For by speaking swelling words of vanity, they allure thro' the desire of the flesh, thro' wantonness, those that were clean escaped from them that live in error.