Ephesians 4:22-30
22You were taught, with regard to your former way of life, to put off your old self, which is being corrupted by its deceitful desires; 23to be made new in the attitude of your minds; 24and to put on the new self, created to be like God in true righteousness and holiness. 25Therefore each of you must put off falsehood and speak truthfully to his neighbour, for we are all members of one body. 26"In your anger do not sin": Do not let the sun go down while you are still angry, 27and do not give the devil a foothold. 28He who has been stealing must steal no longer, but must work, doing something useful with his own hands, that he may have something to share with those in need. 29Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen. 30And do not grieve the Holy Spirit of God, with whom you were sealed for the day of redemption.
Colossians 4:5,6
5Be wise in the way you act toward outsiders; make the most of every opportunity. 6Let your conversation be always full of grace, seasoned with salt, so that you may know how to answer everyone.