Ephesians 6:4
And you fathers [Note: This word probably includes both parents], do not stir up your children to become angry, but bring them up in the training and instruction of the Lord.
Matthew 12:35
The good person produces good things from his storehouse of goodness. But the evil person produces bad things from his storehouse of evil.
Luke 6:45
The good person produces good things from the goodness stored up in his heart. And the evil person produces bad things from the evil [stored up in his heart]. For his mouth speaks what his heart is filled with.
Ephesians 4:29
Do not allow unwholesome [Note: The Greek word for "unwholesome" is "rotten, diseased"] language to come from your mouth, but only what is helpful for building up those who need it, so that you can impart favor [i.e., benefit] to those who listen [to you].
Colossians 4:6
Your speech should always be favorable, seasoned with salt [i.e., interesting and appropriate], so that you may know how to properly answer each person [you talk with].
1 Peter 3:15
But instead, set aside a place in your hearts where Christ is [in full control as] Lord, and be prepared always to give a suitable reply to every person who asks you for a reason why you have an inner hope. But [be sure you do it] in a meek and respectful way, however.