Romans 7:14
For we know that the Law is spiritual; but as for me, I am a creature of flesh, bought and sold under the dominion of sin.
Matthew 12:34-35
"You generation of vipers! How can you speak good, when you are evil? For the mouth speaks what the heart is full of. "When the time of fruit drew near, he sent his slaves to the vine-dressers seized to get his fruit.
Romans 7:12
So then the Law is holy, and the commandment is holy and righteous and good.
Ephesians 4:29
From your lips let no evil words come forth, but such as occasion warrants, such as are good for upbuilding and give a blessing to the hearers.
Colossians 4:6
Let your speech be always gracious, with a savor of salt, and learn how to give every man a fitting answer.