Romans 7:14
For we know that the law is spiritual, but I am made of flesh that is frail, sold into slavery to sin.
Matthew 12:34-35
You brood of vipers! How can you, wicked as you are, say anything that is good? For the mouth talks about the things that fill the heart.
Romans 7:12
So the law itself is holy, and its specific commands are holy, right, and good.
Ephesians 4:29
You must stop letting any bad word pass your lips, but only words that are good for building up as the occasion demands, so that they will result in spiritual blessing to the hearers.
Colossians 4:6
Always let your conversation be seasoned with salt, that is, with winsomeness, so that you may know how to make a fitting answer to everyone.