Romans 7:14
For we know that the law is spiritual; but I am fleshly, sold under sin.
Matthew 12:34-35
Ye broods of vipers, how can ye speak good things, yourselves being wicked? for out of the abundance of the heart the mouth speaketh.
Romans 7:12
So then the law indeed is holy, and the commandment holy, and just, and good.
Ephesians 4:29
Let no loose discourse proceed out of your mouth, but whatever is good for useful edification, that it may communicate grace to the hearers.
Colossians 4:6
Let your discourse be always gracious, seasoned with salt, that ye may know how ye ought to reply to every man.