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.
Acts 20:30
Yea, from among yourselves men will arise, speaking perverse things, to draw away disciples after them.
1 Timothy 5:13
And withal they learn to be idle, going about from house to house; and not only idle, but tattlers and busy bodies, speaking what they ought not.
Titus 1:10-11
For there are many unruly vain-talkers and deceivers, especially they of the circumcision,
James 1:21
Therefore laying aside all the filthiness and superfluity of wickedness, receive with meekness the ingrafted word, which is able to save your souls.
James 3:6
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.