²⁹ Do not use harmful words, but only helpful words, the kind that build up and provide what is needed, so that what you say will do good to those who hear you. ³⁰ And do not make God's Holy Spirit sad; for the Spirit is God's mark of ownership on you, a guarantee that the Day will come when God will set you free. ³¹ Get rid of all bitterness, passion, and anger. No more shouting or insults, no more hateful feelings of any sort.