Ephesians 6:4
You parents, too, must stop exasperating your children, but continue to bring them up with the sort of education and counsel the Lord approves.
Matthew 12:35
The good man out of his good inner storehouse, brings out good things, the bad man, out of his bad one, bad things.
Luke 6:45
The good man, out of his good inner storehouse, brings forth what is good, the bad man, out of his bad one, what is bad. For a man's mouth usually speaks the things that fill his heart.
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.
1 Peter 3:15
but in your hearts be consecrated to Christ as Lord, and always be ready to make your defense to anyone who asks a reason for the hope you have. But you must do it in gentleness and reverence,